Some people harvest it continuously, others wait until after the killing frost, the theory being to allow it to grow all it can.

I planted some in the fall of 2008 and harvest it well after a hard freeze last year. From a couple of plants, I got enough for about a heaping tablespoon. I'm expecting a lot more this year as the plant's foliage exploded.

Mike

An old "rule of thumb" in my necco-da-woods is: Dig horseradish in any month that has an R in it.

For it being in a pot...I don't have a clue, but...I'd think that "rule of thumb" would apply.

I have heard that if you leave even a small portion of root in the ground, that it will come back up. Heard that it is hard to get rid of, so if you dont want horseradishes coming up in you garden, you might want to find someplace else to dispose of that soil after you are done with the pot. ( Man, thats a long sentence )

We never had much of a set time for harvest except maybe in the fall. The roots are usually good after a year, but after a couple years it needs to be harvested and if you want more just put pieces of the roots back and it will take off for your next harvest. We have tilled ours in after a harvest and just let the pieces take root for the following years. Yes, even little pieces will come back the following year. Its not that invasive but I would put it a ways from other plants and as for me I found no problems keeping it under control.

Guess I will wait until frost and dig it then. We moved the pot in July and now horseradish is growing where it sat. Not sure how that could have happened, but more horseradish for Dad is a good thing, he buys a lot!

How do you use/prepare it,sos acres? I have been looking for a grater but guess I havent been looking in the correct places.

Makete, I use it in ketchup as a cocktail sauce (like to dip chicken fingers in it too) or mixed with mayo as a sandwhich spread....not sure all the ways Dad eats it. This will be my first time making it, and from the research I've done will try it two ways, one with the blender and the other with food processor. Will add vinegar.
SOS

Thanks, a m always looking for interesting ways to use horseradish.

sos,

The longer you wait to add the vinegar, the hotter it is suppose to get.

Mike

>>> will try it two ways, one with the blender and the other with food processor. And do it outside !

One of our favorite neighborhood stories is when my across the street neighbors did exactly what your going to do. It was a sunny Saturday afternoon, they had company at the time and had a dinner cooking. Husband and friend dig some horseradish, all go into the tiny kitchen...sound of blender...everyone came pouring out the door to the patio..complaining of burning eyes and wanting air to breath ! LOL

We have two neighbors with horseradish plants. None have ever spread out far from the original planting site, though if in digging one were to drop a root elsewhere that certainly would cause a false sense of invasive plant category.

The roots do go DEEP, and last for as long as the soil is still there from what I've seen over the last thirty years. That's how you managed to find the new plant when you moved the pot. If you don't want it there.. times awasting.. dig now before it goes deeper than you will want to dig down.