Rhododendron not budding

Question

I have 3 Rhododendrons in pots. They only get filtered sun/light. Two bloom well and the third never blooms. It puts on new healthy grow but no buds. They are all in the same area. Can you tell me what might be happening? Thanks for your help.

Madalene

Millbrea

Answer

If the Rhododendron that does not bloom is a different variety than the others, I suspect that it requires more sun to set buds. Not all Rhododendrons require the same light conditions. Is it possible to move it to a sunnier location? Feeding the plants with 0-10-10 (a bloom formula) from late summer through fall will also help.

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