Healthy plants have amazing natural defenses against pests and disease.  We rarely, if ever have an issue and if something happens we use organic pesticides and manure.
Fertilization
We shall teach the club members to make organic fertilizers. At TECC, we firmly believe in organic fertilization but container culture is a whole different culture. We do what we can with organics but we do supplement with synthetic fertilizers.   … Allow me to explain.
Organic fertilizers work with plants like they do in nature. They exist in forms that are very stable and require soil microbes to break them down before the plants can use them.  This slower process develops strong roots and hardy plants but growing in the small containers doesn’t allow for a very large and stable soil microbe population so nutrients often stay locked in the soil.  There are lots of advancements in making organics reliably and instantly available (like synthetics fertilizer) but until they’re a bit more reliable,  we’ve settled on a hybrid fertilizer regimen that uses mostly organic compost with occasional doses of synthetics to make sure our young plants get all the nutrition they need to become healthy adults. Once you plant them out, we urge you to adopt organic techniques to build healthy and productive soils for all your plants.

Awareness campaigns (Green living)