Viewing post #803028 by dyzzypyxxy

any readily soluble fertilizer will work. But you're going to be doing a lot of spraying to grow some of the plants you've mentioned. Long term, you can't expect large terrestrial plants like your Bird of Paradise and ginger plants to gain enough nutrients from foliar feeding. A pelleted time-release fert like Osmocote or the like mixed into the soil will release a slow supply of the right stuff to the roots and will be much more effective.

Epiphytes like orchids and bromeliads do fine with foliar feeding because they are designed to take on the majority of their nutrients through the leaves. But big terrestrial plants need to be fed through the roots.

Think about where and how your plants grow in nature, then decide how to help them grow their best.