When you garden in containers it is helpful to add a cup of dolomite lime to every 5 gallons of soil. I make an organic planting mix using 50% coco core and 50% compost. (2-3 gallons of each) Then mix in a few cups of vermiculite. I fill the container 1/2 then add dolomite (lime) and worm castings to the top half of the container. I also side dress with a 3-3-3 fertilizer after planting but after the plant leafs out I use the lowest nitrogen fertilizer I can find. 1-3-3 (?) because I want food not foliage. The planting mix can be reused but need to be dumped out and reconditioned every year. I just make a pile on the ground cover it with plastic (wet it before you cover it if it's dry) and let the microbes and the worms will come up and to their thing for a few months.In reading the last blog link, it was noted that container gardening has issues with leaching nutrients. Does anyone use compost ? Better yet what is the problem and how is it solved??
The nutrients will last longer and microbes will live longer in the containers if you water with warmed rain or non chlorinated water.
For tomatoes, peppers and eggplant I also make a potassium/calcium side dressing out of banana peels and egg shells. I bake them till dry and grind them to a powered with a coffee grinder. this will stop blossom end rot. It is good in the garden but essential in a container.
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