Why is my Mexican petunia not blooming?

It is possible that the petunias have been fertilized with a high nitrogen plant food, resulting in lush foliage, but non blooming petunias. Change to a phosphorus heavy fertilizer, such as those labeled ‘bloom buster. ‘ Bone meal is also a good source of phosphorus.Click to see full answer. Besides, how do you get Mexican petunias to bloom?Mexican petunia bushes take full sun—the more direct sun they receive, the more flowers will bloom. They can withstand shade and partial shade but will be less productive if planted in these areas.Furthermore, how do you keep Wave petunias blooming all summer? Although wave petunias will tolerate some shade, they prefer full sun. And the more sun, the better! Make sure your waves get at least 8 hours of full sun each and every day to promote maximum growth and blooms. To keep wave petunias blooming, the more sunlight, the better. Thereof, how long do Mexican petunias bloom? Mexican Pansy Quick Reference Chart Native To: Mexico and South America Drought Hardiness (USDA Zone): 8-11 (marginally hardy in Zone 7 with protection) Minimal Bloom Time: Spring, Summer, Fall Any Exposure: Sun or shade Any Time to Maturity 1-2 months Well-draining Should I cut back my Mexican petunia?In general, the only pruning a Mexican petunia requires is an annual pruning in late winter or early spring to remove damaged, weak or otherwise undesirable stems back to the base of the plant. Cutting back spent flower stalks during the blooming period helps maintain a neat appearance.

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