was Lowering the water table in pots; now onco seedlings

penstemon penstemon@Q.com
Tue, 20 Oct 2015 21:14:53 PDT
>Any screen or hardware cloth works. 1/4 hardware cloth seems to be the best but I have accumulated many of these band pots with all sorts of bottom screens from the local NARGS .  Chapter sales and plant venders. But if you use a coarse mix like rotted pine bark and turface you don't need a bottom screen if you pack it against the Anderson bottom flat. For most mixes after the initial watering in, I find the mix stays in the band pot without a screen unless a tree root moves in from below. and empties the pot when you pull it up. 

Dimwit that I am, I threw away who knows how many of those pots, screen included. (Turns out that the pots I ordered are about twice as big as I imagined; probably should have looked at a rule to see how wide three and a half inches was, but they will still work.)
I dislike organic matter in a pot. Or in the garden. Organic matter=soil-borne pathogens, a barrier to penetration by rain, and other gross stuff. I was told that some of the oncos, like Iris paradoxa, grow in soils with quite a bit of organic matter in the wild, but here they get “sandy loam”, a purchased soil with no organic matter in it. 
Bob Nold
Denver, Colorado, USA
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