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This cropped up in a small plastic pot of snapdragons this spring. It's growing like crazy (it's over 2 feet tall already) under conditions of high heat, full sun and erratic watering, so it's pretty hardy. It has no scent, and no indications of flowering so far. If anything, it makes me think of some type of juniper, with the way the "stems" feel (sorry, I don't know the correct term) and the way they look.
Looks like a Casuarina seedling to me. A medium-large tree when mature; native to Australia and an invasive weed in many other warm-temperate areas. Best get rid of it.
Looks like Casuarina equisetifolia, False Ironwood, a common weed in lowland Hawai'i. It thrives in very arid and coastal conditions. It is one of the few weeds that can grow on bare lava!
If you let it grow, it will become your yard!
Wow you guys are good! Very interesting, since I'm quite a ways from the coast in any direction. However, we did visit my husband's family in Brevard County, Florida (the city of Melbourne) earlier this summer, and I'm wondering if I somehow brought a seed back with me--this is not a common plant around here!
Thanks for the help; I'm off to grab my Felcos and cut this one off at the base. No invasive trees for me!
If it were truly a horse's tail, I should expect some good manure for my compost... and an oak, leaves for the same purpose. Since this will apparently do neither, it's history!
It's a Sheoak (generic part of the name, and no claim to be an oak!) resembling a horsetail (descriptor part of the name) - perfectly reasonable, unique and distinct name.
