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9/26/2014

A Palm That Does Well In New England*

setaria palmifolia by Katja Schulz

*sort of

When I say sort of, I am alluding to the fact that this plant that looks like a palm is not really a palm. It is a grass that looks like a palm thus the common and not so creative name of palm grass. Palm grass or as is known in the Latin circles as Setaria palmifolia is a fast-growing annual grass. We brought our plants in as quart pots in late May of this year from Landcraft Environments, a wholesale nursery that operates on Long Island. June tends to stay relatively cool on the Maine coast and palm grass slowly starts to grow and stretch. By the end of summer, as temperatures reach the low 80’s on a daily basis, Setaria palmifolia plants are now over 3 feet tall and wide. The dark green leaves are around 3-4 inches in width, with ridges running along the leaf blades which make them resemble a palm leaf.

Having this texture in the mixed border is a nice contrast, especially in an area where palm trees seem to grow in various shades of greenish-yellow during the summer while taking on a perma-brown cast during the winter months. There is a good reason why palm trees have evolved not to live in New England. They hate the weather! That said, I love New England and I love palms so this is a seasonal compromise after our experiment growing needle palms this past winter turned into a mushy disaster.

setaria palmifolia in cutting garden by underwatererThe leaves and texture of palm grass are coarse with the plant forming a slightly upright clump. The palm grass makes for a nice backdrop for finer textured plants such as kangaroo paws, salvias, and foxgloves. Here in New England, I would grow the plants in full sun, with adequate moisture and ample nutrition. We mulch our plants early in the season with compost and then give them an extra boost with organic liquid fertilizer as soon as the temperatures start to reach their summer highs.

We are planning on digging up a couple of clumps this winter and storing them in our greenhouse for safe keeping for next summer. I am looking forward to seeing how large this clump will become next summer from an established plant. If you live in a warmer climate where palm trees grow extremely well outside, year-round (USDA zones 8 and above) I would caution you to consider sticking with your palms over the palm grass. Setaria as a genus has a tendency to be a weed grass in southeast Asia and India. There are reports of palm grass self seeding in warmer parts of the United States so I would advise against its use in these warmer climes. For us here in New England who do not have the luxury of growing palms outside, year round (maybe it is the 3 to 4 months of snow and cold that do them in as it does in most people), palm grass is a wonderful annual to provide that tropical texture in mixed plantings.

– Rodney

Images: Katja Schulz (CC) and underwaterer (CC)

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  1. Brandon Hall

    March 6th, 2019 at 9:42 pm

    Great read! Do you have any updates on how the palms did once dug up? Would be interesting to find out!

  2. Janet Padgett

    August 5th, 2019 at 11:14 pm

    Ah this was one of the best reads I had in a long time! Being from this area, it really spoke to me. I love different tropicals but especially love grasses. Thank you for taking the time to write this. I am glad that I found it! Have you found any other tropical types that can live up here?

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