Buds That Fail to Open

What does it mean when rose buds turn brown and don't open?

Font
  • A
  • A
  • A

E-mail This Page to Your Friends

x

All fields are required.

Separate multiple e-mail addresses with a comma; Maximum 20 email addresses.

Refresh

Sending E-mail

Sending E-mail

Or Do Not E-mail

Success!

A link to %this page% was e-mailed

Q. I have 130 roses and most perform well by producing many and large blooms. Occasionally, though, buds will form on a few plants and fail to open and brown out on the plant. Do you have any idea why that occurs? I notice it on English roses more than on the hybrids.

--Nipomo, CA

A. Your plants have the symptoms of a fungal disease called botrytis (Botrytis cinerea) This disease prevents the blooms from opening; buds turn brown and decay. Sometimes partially opened flowers are attacked and individual petals turn brown and shrivel. The fungus is always present in rainy seasons when the old blooms are not removed.

Be sure to prune away any infected buds to halt the spread. It will also help to remove spent flowers on a regular basis. Fungicides will help control botrytis. Apply according to label directions; weekly applications may be required during wet springs.

We Recommend...

How to Grow Patio Roses in Containers

How to Grow Patio Roses in Containers

Modern patio roses bloom for many months and allow gardeners with limited space to enjoy their color and fragrance. Look for...

How to Winterize Your Roses

How to Winterize Your Roses

Check out these tips to get your roses through the winter unscathed.

Plants That Kids Love to Touch

Plants That Kids Love to Touch

From the fuzzy fiddleheads of ferns to the touch-responsive leaves of the sensitive plant, many plants extend their leaves,...

(8 photos)
Advertisement

HGTV Outdoors Newsletter

Find out how to make the most of patios, decks and all your outdoor areas, plus tips from master gardeners for beautiful flower beds and bountiful vegetable gardens.