It is said that the laziest people take the most pains. At least this is one of the sayings that my
mother used to say when I was a child, however its total absence from common
use in my adult life makes me wonder. I
am lazy in the way that will cause me to go to great trouble to solve a minor
problem. It is very appropriate to my
current garden project.
Last years’ planting was not an unmitigated disaster, but to
call a glittering success would be an outright lie. I think the details of that deserve more
details elsewhere, but the upshot is that something needs to change if my
planting is to be worthwhile.
I first came upon the idea of self watering plant pots in an
article in the permaculture magazine by vertical veg, who in turn got the
idea from rooftop gardens project in Montreal. This was a few years back, I was instantly
taken with the idea and resolved to make one some day.
The need to get my plants out of the penetrating wind that
passes through the garden meant that the best option would probably be
containers on the patio and I’m not sure I can be bothered with all that
watering. So a self watering system called.
Conceptually a self watering system is quite simple. Two containers are place one above the other, the bottom one contains water and the top one contains soil and plants. between them you have some sort of wick to allow the water into the soil without drowning it. If you are going for a genuinely self watering system then you need the water level to be self maintaining.
The example that appeared in the Permaculture magazine used lengths of pipe with holes drilled to make hollow legs that are filled with soil and water allowing it to wick up into the main soil container. Holes have to be cut into the base of the soil container to allow contact between the soil in the container and soil in the water. These should total 5 -15% of the area of the container base. Smaller holes also have to be drilled in the base of the soil container to avoid waterlogging. The bottom of the legs has to be blocked.
My first attempt was a simple two bucket system with no self levelling for the water.
Conceptually a self watering system is quite simple. Two containers are place one above the other, the bottom one contains water and the top one contains soil and plants. between them you have some sort of wick to allow the water into the soil without drowning it. If you are going for a genuinely self watering system then you need the water level to be self maintaining.
The example that appeared in the Permaculture magazine used lengths of pipe with holes drilled to make hollow legs that are filled with soil and water allowing it to wick up into the main soil container. Holes have to be cut into the base of the soil container to allow contact between the soil in the container and soil in the water. These should total 5 -15% of the area of the container base. Smaller holes also have to be drilled in the base of the soil container to avoid waterlogging. The bottom of the legs has to be blocked.
My first attempt was a simple two bucket system with no self levelling for the water.
Cut 3 lengths pipe of 6-8" long. As a stand alone pot the absolute length of the pipes is not too important, but they do need to be approximately the same.
Drill a load of holes in the pipes. I think I used a 5mm drill to make ~24 holes per pipe. You also need to make sure there are some holes in the right place to cable tie it all together.
Drill a load of holes in the base of the soil bucket to allow drainage and air flow.
Cut holes in the base of the soil bucket for the legs.
Connect the pipes to the bucket with cable ties
It would be a good idea to connect something to the open end of the pipe to stop soil going everywhere. I used plastic from a milk bottle, but I would not recommend it.
Drill a load of holes in the pipes. I think I used a 5mm drill to make ~24 holes per pipe. You also need to make sure there are some holes in the right place to cable tie it all together.
Drill a load of holes in the base of the soil bucket to allow drainage and air flow.
Cut holes in the base of the soil bucket for the legs.
Connect the pipes to the bucket with cable ties
It would be a good idea to connect something to the open end of the pipe to stop soil going everywhere. I used plastic from a milk bottle, but I would not recommend it.