Mandevilla's Failure To Bloom In 2nd & 3rd Season - Knowledgebase Question

Arlington, TX
Question by wes3
May 18, 2001
Why did our Mandevillas fail to bloom their second and third year. They were kept in a greenhouse throughout the coldest months, then placed in the same spots in the yard each season. When we got them we put them in large pots where they have remained.

We have fertilized them with SuperBloom as directed on the fertilizer bottle.

Answer from NGA
May 18, 2001


Mandevillas require plenty of sunshine, an acidic, very rich soil and ample moisture during the growing season to bloom their best; they bloom heaviest when in active, vigorous growth. Fertilizer alone would not be sufficient for good blooming performance over time. It is possible that they need to be repotted into fresh soil or into larger pots, especially if they have grown a lot or if the soil has become compacted and depleted over time as most soils do; a late winter trim can also help stimulate new growth and lusher blooming. Good luck with your mendevillas.

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