I want some really early potatoes, and last year’s attempt to grow some in a bag in my greenhouse was a dismal failure – I think for lack of water.
To solve that I have invented a double bucket system which creates a water reservoir and also has windows through which I can snaffle a few baby potatoes without emptying the whole bucket.
My first attempt used two buckets that were kicking around, from different sources they didn’t nest completely so I didn’t need to use spacers to create a gap.
The outer bucket only needs one or two holes, drilled at the top of the reservoir, that is at level of the bottom of the second bucket, you can establish that by measuring the difference at the top.
The inner bucket has holes for water to get through and four sections cut out the sides, the buckets are usually marked with 16 vertical lines – cut two, leave two, aiming to leave spout area. I found it helpful to drill the corners of these first then cut with a breadknife (or hacksaw) and a Stanley knife.
The cloth in the bottom hangs into the reservoir and draws water up as needed. Water from the top, water fills reservoir and surplus comes out through side holes.
Once well developed I hope to be able to lift out the inner bucket and pull out a helping or two of new potatoes without destroying the plant, so getting a bigger and earlier harvest.
Feed with potassium rich liquid – comfrey, wormery leachate or bought.