The Q&A Archives: My Jacaranda hasn't flowered.

Question: I purchased a Jacaranda tree about two years ago. It didn't flower last year and this year it hasn't yet also. I have seen trees smaller than mine flowering, and I am wondering if mine ever will? It wasn't flowering when I purchased it - so I don't know when it naurally flowers. I thought that as long as I got through the frost OK that the tree would be fine. We have a dry wind in the afternoons and it gets pretty hot here. Is the wind a problem? Do you have any suggestions? If it is not going to flower I might replace with a different tree before this one gets too big.

Answer: Jacaranda trees bloom from May through September in your gardening region. They bloom best in full sunshine, with decent soil and good drainage. Water weekly when it's not rainy, and apply fertilizer made for flowering trees and shrubs in spring and summer, even fall feeding (0-20-20) to encourage roots and flowers especially. If you're not doing any of these things, get with it! If the basic factors are all happening, two more suggestions: if the trees are in the lawn and you fertilize it, they may be getting too much nitrogen, so clear a ring around it and mulch that instead of growing grass up to the trunk. Second, prune it a bit. Right now, clip a few inches off the tip of each stem - sometimes that will stimulate them to grow and flower. In January, clip a few inches off again.

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