Hibiscus and Cherry Blossom Trees - Knowledgebase Question

Montgomery, Te
Avatar for lindab7177
Question by lindab7177
July 11, 2006
How do you get a Hibidcus to bloom.The plant is about 6 years old,it growes real tall but it does not bloom.I have a cherry blossom tree that I have had for at least 12 years and I cant get it to bloom all the way,it does but not like it should.Do you cut back in the fall on these plants and a tree? Thank You for any information,it wll help.


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Answer from NGA
July 11, 2006
Reduced blooming can be caused by too much shade, or by poor overall health. Both of these should bloom their best if planted in a full sun location (direct sun all day long or at a minimumn for six hours including the hour of noon.)

They do well in average soil, but you could use a top dressing of compost each spring along with a slow release or granular fertilizer such as 10-10-10 per the label directions. Using an organic mulch in a flat layer about three inches thick over the root area can also help feed the soil as it breaks down slowly over time.

The hardy hibiscus (rose of Sharon or Hibiscus syriacus) needs a well drained soil and is very drought tolerant, however during extreme dry spells you could provide an occasional deep watering. The cherry is also somewhat drought tolerant, but also benefits from deep watering during dry spells.

As far as pruning, the cherry would not need much if any pruning. The exception is to remove dead or damaged or diseased branches, or to remove suckers that grow from the ground or below the graft on the trunk. The rose of Sharon does not require regular pruning, however many gardeners will trim it back quite hard in late winter to early spring. This stimulates vigorous new growth and should increase blooming as a result. This shrub blooms on new growth of the season, so do not prune it during the summer as this would remove flowering wood.

I hope this helps you trouble shoot.

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