Is a formula of 20 10 10 the right formula?
What Plant Food Do I Need to Feed My Fushia to Get It to Produce Flowers? I Have Lush Leaf Growth but No Flowers.
Certified GKH Gardening Expert
It's best to switch to a balanced fertilizer (with the same amount of nitrogen, phosphorus, and potassium) such as 10-10-10, to promote blooms.
Fuchsia blooms on new growth from the same season, so a dose of a nitrogen-heavy fertilizer (like 20-10-20) is sometimes recommended to get the growth started at the beginning of the season. But if your fuchsia has already produced lush leaf growth this season with no flowers, it might actually have too much nitrogen, which can inhibit flowering.
Here are some other possibilities for why your plant may not be flowering: