Thanks, -R! I missed this post. In the early part of August, I went camping and left my yard in the care of a friend. He watered all the plants but this one...so I came home to a dried out container of Horsetail. The tops died, but new growth commenced immediately; and now the container is full again. I really enjoy these. Josh

Hello Spage1! Left a response on your other query. thanks I would appreciate a cutting once your plants are up and running. Just be patient with them. Keeping in water is fine though I recommend changing the water every few days, though I must admit that with the horsetail species I have that I don't bother! I just stick the ones with roots in a bucket with water and by the time I get around to looking to see if any have survived i will pot up those and toss the dead ones. I let it grow in my yard! It is not that hard to control and it is cool to know that the plant may have originated millions of years ago and has been growing every since!!! Now if I can figure out how I can do that!!!!

I can't imagine a pot Horsetail wouldn't look good in. I do prefer a gazed, foam, plastic pot that doesn't weep moisture. I've kept Horsetail in several climates (no serious freezing) in pots and it does fine. It does have a reputation for being invasive, good grower, etc... And that is kind of true. But not always. It can struggle too. It's not generally a plant it today and it turns into a prize winner next week type plant. I've always planted in clay soil. I generally don't fertilize the first year. Then not a lot. I don't like potting soil because I generally grow in a non draining pot and potting soil, compost, mulch and even top soil doesn't do well. In standing water you can even grow just in pea gravel but some fertilizer is needed. I like the clay because it can hold the water a long time if needed. Horsetail can take standing water but imo does better not in standing water. It can rot, not often, but can like when some other factor isn't great. Wet feet is fine and how I normally grow it. But the best possible conditions is still the same old well drain potting soil but watered often, like even a couple of times a day. That's way too much of a pain for me, so I like clay soil, no drainage, no standing water. Just easier. Even here in Phoenix I can not water for a week in summer when on a trip and it'll pull though. In San Jose CA 2,3,4 weeks without water was OK depending on the location (sun), pot and plant size.

Hi there. Thanks for your comment! I do keep them moist and they're in a southern window so they get lots of direct light. After talking to some more experienced gardeners, I think the most likely problem is that they're root bound. I'm going to use an auger to dig holes in the soil and fill them with fresh soil and see if that helps