Saturday, October 20, 2007
Sawtooth Sunflower (Helianthus grosseserratus)
This is one of those plants that I have seen before but really didn’t know the name or much about it. This flower was growing in the Rock Garden at the New York Botanical garden. Well it was newly planted in the area next to the Rock Garden. This plant is tall! With this specimen reaching about 10 feet. It is a little rangy looking but the flowers are beautiful. If I had a small garden I probably wouldn’t consider this one as it is just too big but it would make a nice back of the border or mass planting in the larger garden. The Willow-leaved Sunflower (Helianthus salicifolius) is a better choice for smaller gardens.
The Sawtooth Sunflower is distinct from some of other Sunflowers with its glaucous, glabrous stems and thin serrated and slightly folded leaves. While native to the Midwestern US it has spread through the Eastern Us and was introduced to Canada. Here is a link to a distribution map:
It likes to grow in slightly moist rich soils but can tolerate even dry gravelly soil. Plants that grow in dense thickets are usually shorter and more compact. Single plants can reach 12 feet tall and are hardy to USDA Zone 3.
Like the post I made the other day with the Elm leaves here are some Guava (Psidium guajava) leaves from the same ‘roll’ as the Sunflower. This picture was shot inside the Enid A. Haupt Conservatory at the NYBG. As much as I try to take pictures inside there they hardly ever come out especially in the section the Guava was growing which is cool and very moist. Here is some more information about Guava:
Finally, in response to Ki’s post about hot sauces of October 11th here is the rack of them I saw in Santa Fe, NM. This was about half of the rack.