Walnuts and dog-strangling vine: a relationship in photos

by Sandy Garland

Once upon a time, 4-5 years ago, I pulled out the DSV that was growing under this walnut tree. I put down some newspapers to keep it from growing back (this doesn't really work) and forgot about it. This year, I noticed there is almost no DSV under this tree. The few DSV plants there are small and wilted.

Once upon a time, 4-5 years ago, I pulled out the DSV that was growing under this walnut tree. I put down some newspapers to keep it from growing back (we’ve learned subsequently that this doesn’t really work) and forgot about it. This year, I noticed there is almost no DSV under this tree. The few DSV plants there are small and wilted.

Another walnut tree, about the same age as the previous one, but this one has been ignored and is surrounded by DSV. A new volunteer has undertaken the job of pulling out this DSV in hopes of duplicating the experience just described, i.e., hoping the tree will inhibit regrowth of DSV.

Another walnut tree, about the same age as the previous one, but this one has been ignored and is surrounded by DSV. A new volunteer has undertaken the job of pulling out this DSV in hopes of duplicating the experience just described, i.e., hoping the tree will inhibit regrowth of DSV.

This walnut tree is probably about 20 years old, certainly old enough to be producing nuts.

Another walnut tree, this one is about 20 years old, certainly old enough to be producing nuts.

Under it, inside the "drip line," there is no DSV and, in fact some bare spots where nothing is growing.

Under it, inside the “drip line,” there is no DSV and, in fact some bare spots where nothing is growing.

Outside the drip line, there are patches of grass with no DSV, but the pattern is irregular.

Outside the drip line, there are patches of grass with no DSV, but the pattern is irregular.

A closer look at a DSV-free area next to the large walnut tree.

A closer look at a DSV-free area next to the large walnut tree. In this one, you can see that the green taller vegetation is DSV.

An area that was sprayed with Roundup last summer and again this spring. DSV is yellow and wilted, but most other vegetation has also been killed.

An area that was sprayed with Roundup last summer and again this spring. DSV is yellow and wilted, but most other vegetation has also been killed.

Looking in the opposite direction from the previous photo, this large walnut tree has successfully defeated DSV and grass is growing under the tree.

Looking in the opposite direction from the previous photo, this large walnut tree has successfully defeated DSV (except for that patch at the right of the trunk) and grass is growing under the tree.

Is this a relationship or just a lot of coincidences? Time to investigate it with some controlled experiments. Anyone interested?

Maples, butternuts, and bitternuts

by Sandy Garland

A fern, planted about 5 years ago along with other woodland species, is now overwhelmed by new growth and species responding to the increased light.

A fern, planted about 5 years ago along with other woodland species, is now overwhelmed by new growth and species responding to the increased light.

The Tuesday group wanted to plant trees – a positive, long-term, satisfying job at any time and much more fun than always pulling things out. I had doubts, because the Old Woodlot is so overgrown with opportunist species taking advantage of all the light to grow to gigantic proportions that there’s no room for anything else. We compromised by loading up a modest number of saplings from our nursery (three) and set off for the woods.

Here’s the situation

Can you see the fern in the photo (above right)? Derek knew it was something good, but it’s completely overshadowed by all the vegetation that has grown in the last 2 years since the ash trees were removed from the woods. The Old Woodlot has changed so dramatically that it’s always a surprise to find things that were planted even 5 years ago.

This Striped Maple was planted in 1997. It and 2 others planted at the same time are well over 3 m tall and are now producing seeds (some just visible in the centre of the photo).

This Striped Maple was planted in 1997. It and 2 others planted at the same time are well over 3 m tall and are now producing seeds (some just visible in the centre of the photo).

At the left is one of three Striped Maples (Acer pensylvanicum) planted as saplings back in 1997. This species needs shade, at the moment provided by Norway Maples, which we hope to eventually replace with native species.

While making a place to plant our Bitternut Hickories, we were also able to pull out some large masses of DSV that were covering ground vegetation and starting to climb up into trees.

Volunteer, Derek, after freeing that tree in the background from a mass of dog-strangling vine that was twisting into its lower branches.

Volunteer, Derek, after freeing that tree in the background from a mass of dog-strangling vine that was twisting into its lower branches.

Melanie, planting her first tree ever!

Melanie, planting her first tree ever!

We cleared our more burdock, motherwort, some Manitoba maples, and some buckthorn, finally making a place big enough to plant our two Bitternut Hickories and a Butternut.

We were fortunate to acquire 5 butternut trees this spring by trading wildflowers for schoolyards with Nature Canada. They are certified native species – unlike the many hybrids that populate the area. Hopefully, they are also canker-resistant and will live many years to feed our wildlife and produce seeds for more native butternut trees at the FWG. (More about the butternut recovery program)

Done! Three more trees planted, an area cleared for more, another balsam fir marked (left), and Jada (the dog) is ready to go home.

Done! Three more trees planted, an area cleared for more, another balsam fir marked (left), and Jada (the dog) is ready to go home.

How to tell the difference between Norway and Sugar Maple

This is a very important skill as our Old Woodlot contains many Norway Maples, which are not native and create too much shade for our understory plants. Sugar Maples are a much better choice for an eastern Ontario forest and we have been planting Sugar Maple seedlings for many years.

Our woodlot started as mowed grass under a plantation of ash trees interspersed with Red Oaks – not very “natural” looking and not particularly wildlife friendly (see photo from 1991). The mowing was stopped and OFNC members donated their fall leaves to the cause of creating a rich humousy soil for future planting of native trees, shrubs, and wildflowers. Unfortunately, more than just leaves arrived – seeds of many unwanted trees and other plants have grown up over the years, but Norway Maples have been most persistent and difficult to weed out as they resemble Sugar Maples.

Three reliable ways to tell the difference (leaf shape being unreliable)

Comparing the keys of Sugar (left) and Norway Maple (right)

Comparing the keys of Sugar (left) and Norway Maple (right)

1. Keys or those double seeds that maples are famous for are very different. Norway Maple keys are much larger and flatter and the wings form almost a straight line (in Sugar Maples they make an upside down V).

Comparing buds of Sugar (left) and Norway Maples (right).

Comparing buds of Sugar (left) and Norway Maples (right).

2. Buds of Sugar Maples are brown and pointed; those of Norways are purplish and rounded.

3. Easiest of all, during the growing season sap of Sugar Maple is clear; sap of Norways is white. Pick a leaf and cut through the leaf stem (petiole) to check sap colour.

Plants and creatures of note

Toad in wood chips, dried “skeleton” of Wild cucumber fruit – all that’s left are the veins of last-year’s seed pod, Eastern Cottontail, Eastern Chipmunk.

Another double header – two gardens in one day

by Sandy Garland

Tuesday must be a good gardening day. Actually, it was the weather that dictated planting the new garden beds at the Horticulture Building at Lansdowne on Tuesday morning – cloudy with showers expected in the evening.

Lynn Armstrong, who is designing a series of raised beds there, asked if the FWG would like to contribute plants to a bed devoted to butterflies. Yes, of course, was the answer, so I delivered Joe-Pye Weed, Flat-topped Aster, Butterfly Weed, Pussytoes, Nodding Onion, Gray Goldenrod, and Virgin’s Bower (clematis) to the area early Tuesday morning.

Of course, I couldn’t just walk away, so I helped Carol McLeod plant, put up shade cloth, and fetch poles, scissors, etc. The other beds contain a variety of annual flowers and vegetables, garden perennials, etc., so “our” bed will be a showcase for native species.

Lynn Armstrong of the Ottawa Horticultural Society and colleague planting annuals.

Lynn Armstrong of the Ottawa Horticultural Society and colleague planting annuals.

Carol MacLeod watering the future “butterfly bed” next to the Horticulture Building at Lansdowne Park

After lunch, it was time to meet the Tuesday Old Woodlot group at the FWG. Jesse and Melanie were the only volunteers, but they did the work of a full crew and we had a great time chatting and learning new things about the wildlife at the garden.

We had decided in advance not to try to do anything strenuous, as the day was hot and humid. Instead, we looked at a lot of recently planted trees and shrubs to give them some space and always-needed water.

We started by watering and mulching the maple trees planted by Ottawa U students last Tuesday (see Double header – two volunteer groups in one day). Young trees really need water and rain just doesn’t provide enough to get their roots growing. Then, to hold the water in, we added a thick ring of wood chips around each tree.

Jesse and Melanie mulching newly planted Sugar Maple trees in the Old Woodlot.

Jesse and Melanie mulching newly planted Sugar Maple trees in the Old Woodlot.

Toadflax (Linaria vulgaris)

Toadflax (Linaria vulgaris)

Next we had a look at the south edge of the woods where we’ve planted a variety of fruit trees last year and this spring. The trees are all doing well, but the “weeds” are doing better. We removed some Canada Thistle (Cirsium arvense; deceptively named, as it’s not native), a bit of Motherwort, all the Common Ragweed (Ambrosia artemisiifolia) we could find, and the ubiquitous dog-strangling vine. We’re keeping the latter at bay in this area, but we’re always on the lookout for masses of seedlings, where we missed a DSV plant last year.

At this time of year, many native plants and “naturalized aliens” are growing faster than DSV. Some of those naturalized aliens are Queen Anne’s Lace (Daucus carota), Catnip (Nepeta cataria), and Toadflax (Linaria vulgaris). All of these are great wildlife plants, well used by pollinators. Queen Anne’s Lace is even a larval host plant for Black Swallowtail butterflies.

Catnip (Nepeta cataria)

Catnip (Nepeta cataria)

Queen Anne's Lace (Dauca carota)

Queen Anne’s Lace (Daucus carota)

More watering. Young trees cannot get too much water.

What we saw
Melanie is very interested in helping bumblebees and we were delighted to see bumblebees on thistles, Catmint, and Queen Anne’s Lace. We’re hoping to contribute these sightings to the new citizen science initiative, Bumblebee Watch, if we can only get photos!

A pair of Summer Azures swirled together, we saw a Banded Hairstreak on a thistle, and a large orange Eastern Comma (or perhaps a Question Mark) perched on some wood chips, but not long enough for a photo.

We saw a beefly, but again the minute I raised my camera, it disappeared. The clematis is in full bloom and covered in bees and flies of all kinds. I also saw the first Black Swallowtail of the year (for me).

Jesse also saw a Common Gartersnake in the Butterfly Meadow and a now common Cepeae snail on DSV.

Huge Gypsy Moth caterpillar. The finger is there to show the scale (the caterpillar measures 5 cm).

Huge Gypsy Moth caterpillar. The finger is there to show the scale (the caterpillar measures 5 cm).

But Jesse won the find-of-the-day prize when he noticed a huge caterpillar on the trunk of an oak tree. I took a few photos and later used the Discover Life guide to ID the creature, which was 5 cm long!

I was horrified to discover that our beautiful caterpillar was the larva of the Gypsy Moth, which is known to destroy forests in North America. I quickly emailed our nature expert to ask if this was cause for panic. She replied, no, we DO have this species at the FWG (and other parts of Ottawa) but not in sufficient numbers to do any damage.

She said, “Sometimes I find large egg masses of the species, but only a small percentage survive to reach adulthood. I think I have found all stages every year for about the last 20 years at the CEF. This is not to say that they are not a big problem in some areas in some years. They seem to exist in quite low densities for a long time and then suddenly there is a big population explosion. However, we have a good and healthy Peromyscus population at FWG and they like eating gypsy moths, and many birds eat the larvae including jays, catbirds, robins, etc. – all species we see at FWG and the CEF.”

The moral for the day: not all alien species are bad. In fact, those like Queen Anne’s Lace can be beneficial to local wildlife. And even species with a bad rep, like Gypsy Moths, can live in balance with the other wildlife in our area.

Questions: Are the filamentous fungi in our piles of wood chips “good” or “bad”? If we’re not supposed to pile mulch close to the trunks of trees (because they might develop fungi), why is it okay to mulch with chips that are full of mycorrhizae?
Note to self: We’re pretty certain Black Walnut trees inhibit the growth of DSV, but they sometimes need help. Remember to cover the mass of DSV under the walnut at the southeast corner of the woods. If we can kill the plants that are there now, the walnut tree might keep others from growing back. This has worked in the past; is it a reliable method?

Double header – two volunteer groups in one day

by Sandy Garland

Yes, despite the threatened thunderstorms, both the Tuesday group and a crew of people involved in the Learning Garden at Ottawa U came to work in our Old Woodlot the same day.

In the afternoon, Derek and Mirko tackled the milkweed field with scythes. Despite the hot, humid weather, they succeeded in clearing the west side of the field. However, Mirko hinted that we might think about hiring someone with a gas-powered (rather than human-powered) cutter.

Derek and Mirko cut dog-strangling vine in this part of the milkweed field. Although cutting does not stop growth of DSV, it does keep it from “strangling” trees and from producing seeds. Another cut in August should prevent new seeds in this field.

And our Common Milkweeds are growing in that field, despite being surrounded by DSV.

And our Common Milkweeds are growing in that field, despite being surrounded by DSV.

Balsam Fir saplings still growing under all those taller plants.

Balsam Fir saplings still growing under all those taller plants, including dog-strangling vine.

Meanwhile, new volunteer, Melanie, and I decided to tackle our burdock “trees,” continuing Jesse’s work from last week. We worked along the east edge of the woods, cutting the large first-year rosettes as well as the massive second-year plants. Some motherwort had to come out as well, but we uncovered a number of Balsam Fir trees that seem to be doing well.

Eastern Comma, another butterfly whose larval host is Stinging Nettle.

Eastern Comma, another butterfly whose larval host is Stinging Nettle.

We stopped to watch an Eastern Comma and noticed a couple of new-looking Red Admirals – apparently not all the caterpillars on the nettles were eaten.

Other wildlife: we saw a pair of Great Crested Flycatchers (possibly the ones that nested in the box near the bridge), several toads, mason wasps using the insect hotel, Summer Azures, a Cabbage White, and a couple of snails.

Despite the shade along that east path, White Snakeroot is already starting to bloom. It has spread throughout the woods and can usually be counted on to shine in late summer, early fall, when other plants are starting to fade.

White Snakeroot, blooming early?

White Snakeroot, blooming early?

Blue Vervain is spectacular this year – there’s a huge bunch of it along the southern edge of the FWG just south of the woods.

Blue Vervain - attracts both bees and butterflies with its striking blue colour.

Blue Vervain – attracts both bees and butterflies with its striking blue colour.

It was a pretty hot day, so we packed it in early and sat in the cool of our Resource Centre drinking water and comparing notes on what we saw and did.

Home for dinner, and for me a return trip to the garden to meet Renate, a long-time FWG volunteer, and her colleagues from Ottawa U’s Learning Garden. The FWG donates plants to this garden every year in exchange for an evening’s work in our garden.

After introductions, Alan, Amanda, Afnan, and Nicholas loaded up the wheelbarrows with maple trees and tools and set off for the woods. After an afternoon in the jungle the woods has become, I had serious doubts about finding a place to plant these trees.

Afnan and Amanda started by removing Canada thistles (an alien invader despite its deceiving name), from around the fruit trees on the south side of the woods. Meanwhile, Nicholas, Alan, and I found a path into an area just south of where I had planted maples last year. Once I explained which plants were “good” and which needed to go, we set to work.

Nicholas

Allan-Amanda-Afnan

In no time at all, the intrepid crew had cleared some space and we could see bare ground. We could also see a big patch of trilliums that I rescued many years ago from the middle of a soon-to-be highway 416 off-ramp. Nice to see these old friends – and doing so well!

White Trilliums rescued many years ago, now spreading nicely in their new home.

White Trilliums rescued many years ago, now spreading nicely in their new home.

Renate brought the 10 trees and buckets of water and they were soon in the ground – not a moment too soon as the rain finally arrived, capping off the evening with a good soaking – of plants and people.

Thanks so much for all the hard work – Tuesday group AND Learning Garden guys!

Best nature walk yet!

by Sandy Garland

Great sunny weather and a number of Facebook friends made this the best nature walk we’ve had this year. Don’t worry, though, there’s still time to join us for the next one. We’re having guided walks at the garden every second Sunday afternoon until the fall. They’re casual and fun – just a good time to get outdoors and relax.

Laurie Wilson photographed by Lisa Vee

Laurie Wilson photographed by Lisa Vee

Laurie’s enthusiasm about nature and the garden make these walks a lot of fun for everyone. Of course, it always helps when Marilyn comes along to identify birds for us. Today, she pointed out a Red-tailed Hawk sailing over the garden and impressed everyone by identifying birds by their songs alone.

Armed with field guides, binoculars, and a butterfly net, we all set off to see what was happening at the garden today.

The best place to see hummingbirds. Photo by Aroop Ghosh

The best place to see hummingbirds. Photo by Aroop Ghosh


First stop, the bridge – a great vantage point to see hummingbirds in a few weeks when the Jewelweed growing just below starts to flower. Today we could see a young Tree Swallow peering out of a bird box across the pond in the other direction.

Watch out for nettles. Photo by Aroop Ghosh

Watch out for nettles. Photo by Aroop Ghosh

Don’t touch the nettles! They’re covered in tiny hairs that break and inject you with chemicals that make your skin burn and itch. But Red Admiral butterflies lay their eggs on these plants and their caterpillars not only eat the leaves, but curl up inside them. How do they do that?

Silver-spotted Skipper photographed by Aroop Ghosh

Silver-spotted Skipper photographed by Aroop Ghosh

On to the Butterfly Meadow where two kinds of milkweeds are blooming along with fleabane, vervain, Queen of the Prairie, bedstraw, mallow, beebalm, and more.

We caught this Silver-spotted Skipper in our net and popped it into a bottle for a closer look before releasing it back into the midst of the flowers. Aroop snapped this great photo of it perched on the edge of a Queen Anne’s Lace flowerhead.

Banded Hairstreak photographed by Aroop Ghosh

Banded Hairstreak photographed by Aroop Ghosh

He also captured this lovely little Banded Hairstreak poised on Daisy Fleabane. And we saw a very fast-moving Great Spangled Fritillary.

On to the Insect Hotel, but bitter disappointment. The mason bee boxes that we had installed this spring had been full of larvae, sealed in their tunnels behind clay walls. Today, predatory wasps had arrived and it was clear they had broken into many of the bee tunnels. We talked a bit about whether it does more harm than good to build a bee hotel and concentrate these species where predators can then easily find them. No easy answers, of course. We try our best.

Our Insect Hotel, photographed by Aroop Ghosh

Our Insect Hotel, photographed by Aroop Ghosh

Green Frog tadpoles in our small backyard pond. Photo by Aroop Ghosh

Green Frog tadpoles in our small backyard pond. Photo by Aroop Ghosh

Back to the Backyard Garden, a bit of shade, and a drink of water. We were all drawn to the pond and were delighted to see dozens of tadpoles swimming among the water plants. These are likely Green Frog tadpoles as this species is common in our small pond.

The garden was buzzing with bees, many on this fine stand of Fireweed, below.

Fireweed in full bloom, photographed by Aroop Ghosh

Fireweed in full bloom, photographed by Aroop Ghosh

Canada Lily, photographed by Lisa Vee

Canada Lily, photographed by Lisa Vee

Another spectacular native wildflower that’s at its best right now is this Canada Lily. The numerous blooms and the way they each grow on a separate stem make it look like nature’s chandelier.

All in all a busy day at the FWG. I really enjoyed meeting everyone, chatting about plants, and catching insects with that charming young man who plans to study zoology. Let’s do this again some time!

Special thanks to Aroop and Lisa for taking such wonderful photos. You can see more of Aroop’s in his Fletcher Wildlife Garden album on Facebook and Lisa’s in the FWG Facebook group.

Burdock, motherwort, and nettle jungle (or It’s not always about DSV)

by Sandy Garland

Tuesday again and another chance to work in the Old Woodlot! I was rather disorganized this week as it sort of looked like rain, except when the sun came out, and volunteers arrived one at a time, so it was hard to know how big a job to tackle. So we loaded a little bit of everything into the wagon and set off for the woods.

Riddell's Goldenrod (Solidago riddellii) protected by a wire fence until they become established.

Riddell’s Goldenrod protected by a wire fence until they become established.

Kate wanted to plant something, so I gave her five goldenrods – Solidago riddellii, a species new to me. I acquired these plants this week in a trade with Renée De Vry, who manages the Meditation Garden next to the Unitarian Church on Cleary Avenue. Well worth the visit, by the way, as Renée does a fantastic job and has created a bee sanctuary as well as a truly beautiful garden filled with layer upon layer of both “tame” and wildflowers, shrubs, trees, and grasses. Stroll the paths or sit on one of the benches and just breathe in the greenness.

Ted continued to uncover and mark small trees that we’ve planted over the last few years to give them room and light to grow. We found a more suitable flagging tape for this purpose, so you’ll see little flashes of red all over the woods this week.

Jesse chose to cut burdock, which has now reached the size of small trees. After ensuring that he could identify the right plants, he set off into the east part of the woods with our heavy-duty loppers and disappeared for the next hour. Just as we were thinking about sending a search party, he appeared to ask what to do with the cut burdock, which was now filling the east trail! (For more about burdock, please see our invasive species fact sheet in English or French.)

This was Derek’s first time working in the woods. (Previously, he had helped pot up plants for the sale in early June.) We introduced him to the scythe and turned him loose in the part of the woodlot we call the pine forest – a stand of about 15 White Pine trees planted by Fisher highschool students in 1995. Derek took to scything like a pro, and quickly cut all the dog-strangling vine (DSV) in this area.

Derek scything DSV in our “pine woods.”

Derek scything DSV in our “pine woods.”

Well-rotted DSV (right) used to cover tiny DSV seedlings (left)

Well-rotted DSV (right) used to cover tiny DSV seedlings (left)

Meanwhile, I decided to finally empty the garbage bags that have been sitting next to the pine trees since last fall when a group of Carleton students filled them with DSV that they had pulled up. I wanted to use the contents to mulch around more Red Osier Dogwood shrubs where DSV seedlings were growing thickly.

Another aside: Last week, I mentioned that we were going to try to find out whether DSV plants lying on the ground would affect the growth of “good” plants near by. Naomi Cappuccino (a professor at Carleton who has been studying DSV for many years) wrote: “There have been papers on the allelopathic effects of DSV, with chemicals exuding from the roots that can harm other plants. I would be surprised if a rotting pile of DSV had the same effect though. I would imagine that the compounds in the leaves would not be stable for long in the environment, and since rotting plants, unlike living roots, wouldn’t be continually producing these compounds, I doubt there would be a problem. But you never know! I think that if you haven’t noticed anything obvious, if there is an effect it is probably small.” Which I interpret to mean: go ahead and leave the pulled DSV in the woods, but keep an eye on adjacent plants. I also Googled DSV allelopathy and found an excellent article on the ecology of DSV.

I inadvertently disturbed a bumblebee nest in this bag of dead DSV

I inadvertently disturbed a bumblebee nest in this bag of dead DSV

Unfortunately, in my enthusiasm to empty those bags, I accidentally evicted a queen bumblebee who I believe had made a nest inside. I backed away immediately and watched as she tried to figure out what had happened to her home. We moved to another part of the woods in hopes that the queen would be able to find her nest and continue to use it.

Kate and I decided to tackle an area where I have been planting Sugar Maple trees in hopes of making space for more. In addition to burdock, Motherwort, which seemed so innocuous in the spring, has now grown to be 2 metres tall, completely covering any trees and plants. We also have to watch for stinging nettles, as grabbing one in error can result in a painful sensation that lasts for hours.

Slender Stinging Nettle

Slender Stinging Nettle

Slender Stinging Nettle (Urtica dioica ssp. gracilis) is a native species and the larval host for Red Admiral butterflies. So we don’t want to remove it even though it can give our volunteers a nasty burning sensation if they so much as brush against it.

A month ago, we noticed Red Admiral butterflies paying attention to these plants and a couple of weeks later found lots of caterpillars eating and “nesting” in the leaves. We’re eagerly awaiting another generation of butterflies…

After showing nettles to everyone in the crew and pointing out potential anitdotes to the skin reaction they cause – mainly the multitude of Spotted Touch-me-nots growing nearby – Kate and I got into a discussion about what causes the skin reaction: sharp hairs covering the leaves or chemicals that the plant produces.

It turns out we were both right. The leaves and stems are covered with tiny hairs “whose tips come off when touched, transforming the hair into a needle that will inject several chemicals: acetylcholine, histamine, 5-HT (serotonin), moroidin, leukotrienes, and possibly formic acid. This mixture of chemical compounds causes a painful sting or paresthesia from which the species derives one of its common names, stinging nettle, as well as the colloquial names burn nettle, burn weed, and burn hazel” (see Wikipedia for references and more info). See also the US Forest Service database for everything there is to know about this species and its close relatives. And see WebMD for reputed medicinal uses, side effects, etc.

Summer Azure

Summer Azure

Despite the gloomy damp day, we saw a White Admiral butterfly as well as the ruffled bumblebee. The day before, I had also found a Summer Azure, a pretty little blue butterfly examining, of all things, dog poop. Although we definitely want dog walkers to stoop and scoop, it is well known that butterflies are attracted to the nutrients in dog feces. I will leave that bit of information with you to do as you wish; but please do not experiment with feces at the FWG!