feed for flowering/fruiting plants

Question

I’ve been reading your article on how best to grow heliotropes. It suggests a feed for them that is heaviest in phosphorous. I always thought that you gave flowering or fruiting plants a feed that was heaviest in potash ?

Answer 1

They are heavy feeders and need both phosphorous and potash as well as nitrogen. Look for a fertilizer with NPK of 10-20-10.

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/using-potash-in-garden.htm