Lowering the water table in pots; was Anderson deep propagation flats

penstemon penstemon@Q.com
Tue, 20 Oct 2015 15:35:19 PDT
The onco seedlings I stated last spring have been doing fine just sitting outside in pots of sandy mix  sitting on a sand base.  We too have had no rain in months so I don't think you need perlite once they have germinated. 

A friend uses limestone gravel and sand in large potshots excellent results. But do not water before it gets cold. 

I water the seedlings all year long, because that gives me the healthiest seedlings; they can be kept green twelve months of the year. 
The trouble comes when I forget that the pots contain different types of growing media. 
I have a new batch of seed germinating in perlite now, and when leaves show, they’re going to be watered as though I were growing tomatoes, using a tomato fertilizer even, but grown in deep pots, in pure perlite. 
Here’s a picture of the Iris kirkwoodiae seedlings, grown in perlite, watered and fed constantly.
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