Saturday was a good day at Forest Hill for a hike with my dog,
Remi. The early morning weather was mostly sunny with a temperature of 70 degrees and no wind. At the crest of the hill, I looked west at a
landscape dominated by lush, green vegetation. Descending the hill, I saw lots of Milkweed plants and was puzzled that I still haven’t seen any Monarch caterpillars or butterflies. Many of the plants still had
green clusters of flower buds called umbels. These buds first appear in early summer and can be harvested for about seven weeks. I picked one of them and ate it. It had a mild leafy taste. The
flowers themselves were quite fragrant and were used by Native Americans to make jam. Next, I passed Mallard Marsh and entered Bobolink Meadow where I stopped and broke off a Milkweed
leaf to reveal the white “milky” sap that gives this plant its name. It contains 1-2% latex and scientists during World War II tried to create rubber from it, but concentrations of latex were too small. Because this “milk” is sticky, it’s a defense mechanism for the plant as some insects will get their mandibles stuck when feeding on the leaves. Monarch caterpillars, on the other hand have developed methods of draining the sap before they consume the leaf. Continuing through the meadow, I counted a dozen Redwings-male and female, young and old, moving about and another dozen
perched in some tall trees on the edge of North Woods causing quite a commotion. Next, I turned south and headed toward Willow Wallow where I spotted another type of Milkweed called the
Swamp Milkweed. Like Indian hemp, the stem of this plant becomes very fibrous in the fall and makes excellent cordage. I turned west at the pond and hiked around Succession Field where I saw a lovely
Little Wood Satyr butterfly sunning itself. I turned south past Artist Overlook where I could not see but could hear the mimicking song of a
Catbird. Following south trail, I spotted an unusually large
flower gall on a small Ash tree caused by Eriophyid mites. Heading east toward Frog Fen, I came upon a patch of
Canadian Thistle. Turning south, I walked past Brady Cemetery and turned north into Native Grassland where I could smell the sweet aroma of
White Sweet Clover. I paused at a desolate
Grebe Pond and was puzzled by how few Green and Blue Herons I’ve seen here compared to last year. Continuing around the pond, I noticed more Milkweed on both sides of the trail. I broke off another
leaf, touched the white sap and remembered that it also contains a Cardenolide toxin that is lethal to many herbivores except Monarch caterpillars. Also, the larva and the adult butterfly sequester this chemical in their tissue, making them toxic to many potential predators. This sap can also cause mild dermatitis in some people and acute chemical burning of the eyes resulting in temporary blindness. Finally, we made it past the barn and classroom to the car for our trip home.
Why do I walk an earthen trail?
Weekly hikes come rain or shine
Why do I get up early and go
Start before the stroke of nine
What brings me to this spot?
With meadow, pond and hill
Why do I always return?
There’s a need I can fulfill
My spirit connects to nature
My feelings for her are strong
I found somewhere special
A place where I truly belong
D. DeGraaf