boron deficiency

Question

My plants have boron deficiency. Any organic method to improve?

Answer 1

Borax is a source of boron and, in the US, is permitted in organic farming. Use it carefully in small amounts, because too much boron can also harm plants.

Most sources of organic matter contain boron, so adding compost or the other sources of organic matter on this article should help:
https://www.gardeningknowhow.com/special/organic/the-importance-of-soil-for-an-organic-garden.htm