In article
mike. buckley wrote:
lo all.

I can find plenty of products to helpfully dispense water to my plants
from a pressurised mains feed (like an outside tap), but I can't find
anything that's suitable for a gravity feed like a water butt. Is
anybody doing this? In the height of summer my toms dry out between me
watering them before I go to work and getting back in the evening.

How about hooking up an old windscreen washer pump, 12v battery (with
solar charger?), timer to run the pump for a few minutes every hour ...