How to ensure hydrangeas will bloom?

Very frustrated the foliage is magnificent on my hydrangeas bushes so green and lush but not a single bloom and no signs of any to come. What should I do to prepare for harsh zone 5 direct lakefront besides mulch. Should I fertilize and with what? Should I feed now? Ammend soil and with what? Any help is greatly appreciated .

  3 answers
  • Vimarhonor Vimarhonor on Aug 21, 2018

    Hello M,

    Me too, I have the exact same problem in zone 7.

    I have reasearched this with the following finding —that might explain my situation.


    In summer, branches produce new buds for the next spring. These buds stay dormant all winter and bloom in spring. If winter temperatures got too cold, or if there is a spring cold snap that kills the buds, non-reblooming Hydrangea macrophylla will not produce flowers that year.


    There are hundreds of bigleaf hydrangea cultivars in

    the trade, however, aside from flower type and color, the principal cultivar selection criteria is cold hardiness. Bigleaf hydrangea is rated as a zone 6 to 9 species; however, the shoot system (leaves, stems, and buds) of many cultivars are not hardy in zone 6 (areas west of Roanoke, Virginia), where average minimum temperatures for zone 6 are zero to minus10 F. In general, temperatures below zero F will kill flower buds as well as well as stems, but new stems may be regenerated from roots the following spring provided that the low winter temperatures did not kill the root system. Flower buds, but not necessarily stems, can be killed in the range of zero to 10 F.


    http://blogs.lt.vt.edu/mastergardener/how-to-choose- a-big-leaf-hydrangea-for-your-garden/

    • See 1 previous
    • Vimarhonor Vimarhonor on Aug 21, 2018

      I understand your frustration completely. Stll trying to figure out my solution. Ive seen Martha Steward wrap up her hedges in burplap but —don't remember why.


      I might additionally suggest contacting your cooperative extension for the best local to your planting zone- professional advice.

      These offices are manned by volunteer master gardeners on site there waiting to answer the communities questions that know your local situation quite well.

      Master gardeners are required to volunteer back designated hours ( plus continuing education) ofren on the help desk or traveling roadshows each year to maintain MG certification -this community outreach and education is their goal. They're waiting to help you.


      There's also email ( submit a photo) Q&A resources that have helped my concerns and questions many times. But I think ypur local MG are a great place to solicit the best advice— a free consultation.


      I hope you get it sorted out, we dont have much control over the weather do we?

  • Joy30150932 Joy30150932 on Aug 21, 2018

    Fertilizing will only give you more lush growth. Mine is in a Zone 3 and I mulched the base around it to stop the weeds and hold the moisture but that is all that is required. Check on line to see what is recommended for your problem.