Look at the strong new roots growing on the geranium (pelargonium) we looked at three weeks ago. If you remember, it had been over-watered. (the pot weighed 370g (13 ounces)) before purchase and the roots weren't looking too healthy.
WETTING AND DRYING INDUCES ROOT GROWTH
By repeatedly allowing the pot to dry down to 7 ounces (about 200g) then adding 4 ounces of water (about 120ml), with no other watering, the aeration of the compost together with drying has produced this result. The pot is watered just as the compost, as seen through the holes in the base of the pot, is just starting to change colour. This now defines the watering regime for the plant.
NO FEEDING YET
I have applied no feed yet, since there will be slow-release feed already in the compost. This has meant I could not dry the pot out to its maximum. I did try to go further, but the leaves started to scorch. No matter. At least we know what the limit is. And new leaves will soon grow.
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