Return to the Roses Forum | Post a Follow-Up

When to apply first fertilizer?

Posted by Sara-Ann z6b OK (My Page) on
Thu, Apr 17, 14 at 11:31

Lately I have been wondering when the best time is to apply the first application of fast acting fertilizer? Should it be after the first bloom cycle, as I've been told, or should it be sooner? I've already applied the Mills Rose Magic and all my established roses are setting on buds at this point. I was wondering how much difference the timing makes on this?

Follow-Up Postings:

RE: When to apply first fertilizer?

  • Posted by hoovb z9 Southern CA (My Page) on
    Fri, Apr 18, 14 at 17:56

One factor to consider is how fast the fertilizer breaks down into a form that the plant roots can make use of. One thing about "organic" fertilizers is that they must first break down via soil bacteria, fungus, timing would be effective if you knew how fast the nutrients make their conversion--or if you used an instantly available chemical fertilizer--maybe foliage feed--if you believe in foliar feeding...

A study done by the UC agricultural division found that roses have their maximum need for nutrients when they are in full bloom. This study was done in greenhouse conditions with the roses in a hydroponic solution. The amount of fertilizer absorption was precisely measured by seeing how much fertilizer was removed from the hydroponic solution by the plant roots, allowing for degradation, evaporation, ect. So giving roses a quick acting fertilizer at full bloom might give you maximum results.

However, simply providing moderate, steady amounts of nutrients in the form of compost and regularly applied organic fertilizers will likely do just as well. Experiment and see what works for you.

RE: When to apply first fertilizer?

Thank you hoovb for the sensible advice.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Roses Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here