[Image Description: Four shots of different plants. In the first two photos, there are a couple large four-petaled blue flowers around a cluster of hundreds of teeny-tiny blue blossoms. You can also see several leaves in the background. The third picture appears to be the same plant, but a light purple (almost pink). There are several clusters of the big flowers surrounding the smaller ones. The last photo is just of the green leaves of the plant. There’s a just starting to bud cluster of small blossoms in the middle of the leaves, but no big blossoms around it.]
This was going to be my first failure!
I saw those beautiful blue flowers at Pinewoods Camp this year, and took a couple pictures. They were not natural, being planted alongside one of the buildings, but I thought they were pretty regardless. I pulled up the photo, hit up some flower IDing sites...and got nowhere fast. I just couldn’t figure out the right combination of keywords to get me a result.
But then, just this past weekend, I was out walking with a friend and we spotted the purple version! I immediately took some extra pictures to keep trying to ID it, while my friend mentioned casually that he had a source for IDing flowers. He posted on the book of faces, tagged us both in, and lo and behold, his flower friend appeared to tell us it was a very pretty colour of Lacecap Hydrangea (Hydrangea macrophylla). Thank you friend of a friend!
Reading up about the species on wikipedia, I found that the different colour blossoms is dependent on the pH of the soil! My Pinewoods hydrangeas are planted in a more acidic soil, while the pinky ones found in the middle of Boston are in a more alkaline! I vaguely knew that “soil pH” is one of those things gardeners think about (like amount of sunlight and water content) but I’m excited to see such a clear difference.
Part of why it was so hard for me to identify was my confusion at the same plant having big flowers and little flowers. As it turns out, that’s a feature of the plant! Those big ones are the splashy attractors, to get pollinators buzzing around and interested. All the actually fertile parts of the plant are in that middle section. I think that’s pretty neat!
I think the big lesson here is just a reminder for my silly brain that the internet is an amazing resource, but it is not the only resource. Adventure Buddy has helped ID things before, and there’s no reason not to reach out to the other clever people I know when I’m getting stuck.
Photo Credits: All four photos are CC-BY-NC CitySpider 2018. The first two are from Pinewoods Camp, the next two are from...somewhere in the middle of downtown Boston (pretty close to South Station).