Bottle Brush Trees
Q.

I have a bottle brush bush, no brush on ends

Zone Phoenix, Arizona 85032 | mheilman1 added on October 24, 2016 | Answered

The bush is at least 4 years old, beautiful green, very little or none of the flowers that are supposed to come blooming. Any advice? It has been fertilized its second and third year.

A.
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Downtoearthdigs
Certified GKH Gardening Expert
Answered on October 24, 2016

A Brush Tree needs a sunny location with at least 6 hours of sunshine.
Only prune after it has bloomed heavily, if it has a few flowers; avoid pruning these off the tree.
I would also have a soil test done. If you have too much Nitrogen, this will inhibit flowering.
Over fertilizing is also a reason for excessive Nitrogen in the soil.
You can give the tree an application of Phosphorous to promote flowering; Bone Meal is a good way to add Phosphorous to the soil.
Here are some links with more information.

https://www.gardeningknowhow.com/ornamental/shrubs/bottlebrush/growing-bottlebrush-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm

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