This is the first in a series of blog posts we will be sharing from our summer communications volunteer, Saffron Hefta-Gaub. Saffron is a sophomore at the Bush School in Seattle, Washington, and we are delighted to share her perspectives on UW Botanic Gardens’ spaces and programs.
July 19th, 2015
On this lazy, hot, summer day, I embarked on my first event with the UW Botanic Gardens: the Free Weekend Walk. The great things about the tour are that it’s free, every Sunday, and open to all ages. The walking was brisk, and despite the heat, our guide Catherine kept us entertained. The theme of this day was Hydrangeas and Other Summer Bloomers. Themes like this switch every month to best fit the season.
Because I can’t drive, I was dropped off at the Graham Visitors Center, just before one o’clock. After inquiring at the desk, I waited until our guide came right on time, starting us out with a few introductory facts. I learned that the park was 230 acres, the majority of the land being owned by the city with the collections belonging to the Botanic Gardens. We were a group of twelve, including me, horticulturalists and tourists alike. To begin, we circled around the parking lot, stopping by the greenhouse to see the large-leafed “dinosaur food” bog plant native to South America, with long, almost Pinecone-esque petalless flowers. Behind the greenhouse was a gorgeous pomegranate tree, which, with the warm season we’ve been having, bore fruit.
After we looked at the various trees in the bright sun, we circled back around to the main path, which thankfully had patches of shade. It was 90 degrees out, mind you, and I had stupidly forgotten a water bottle. Our guide was good at keeping our minds off the heat, though my thirst for water preoccupied a third of my thoughts. The rest of my mind filtered through facts and phrases for this post, while another small section wanted to be binge watching my favorite show, though I shouldn’t mention that here, have to be professional. 😉
The tour, after all, was focused on the blooming hydrangeas, and the first one we accounted on the path was drooping from the drought. In fact, many of the plants we passed had brown, forgotten leaves. Facts from my 9th grade biology class kept popping up, an unplanned refresher in photosynthesis and the food web. The dead leaves on the underside of the trees were the plants’ way of conserving energy and water; leaves with less light had more energy going into growth than coming out of photosynthesis. We also spotted snag trees, dead plants that had become homes for insects, decomposers who feed off the bark. The insects attract hungry birds and bats, and soon you have full ecosystems on one dead tree.
Back to the hydrangeas: interesting tidbit, there are three kinds of hydrangeas: lace top, mop top, and the cone-shaped paniculatas. The flowerettes around the base of the lace top, when lifted up, are a signal to the bees that pollination should occur, and drop once there is nectar. Nature is amazing!
Next in our walk up the shadow scattered hill were the magnolias. Yet another thing that I learned was that because magnolias, evolutionarily, predate bees; the flowers are shaped and hang in a way so that they can be pollinated by ants and beetles. The magnolias have a nice citrus smell, and because of the unusual heat, many of the trees we passed were on there second bloom of the season, which our guide had never seen before. The magnolias also provided a much needed shade. Another tree we saw was the sassafras tree, the origin of root beer. The cool thing about the sassafras tree was that was only one of two trees with the three kinds of leaf shapes: mitten, flame, and ghost. Seeing all the differently shaped leaves on this tree and the other species we passed was strange and interesting.
Finally, we got to the large collection of hydrangeas. There were many beautiful bushes, colored blue and white. Catherine informed us that these hydrangeas did in fact change color based on the PH of the soil. We also spotted a hydrangea that grew vine-like on a tree, but in a safe way. By now, it was time to turn back, and we headed on a gravel path through the forest, where it was shady and cool. The final fascinating fact I learned was that many of the magnolias and other “tropical” plants that thrive in the southeast United States are related to the plants of Asia, an offshoot from back when the land was all one continent.
All in all it was a great way to spend my afternoon. Our guide Catherine made it entertaining, educational, and we got in some exercise! All three e’s! The Botanic Gardens have my interest, and I am sure they will have yours if you take the chance to visit. The Arboretum is beautiful, the paths are easy to use, and with these guided tours, navigating and fact-learning is easier. I’d highly recommend it.