It’s those leaf-cutter bees that leave holes in the rose petals. Is there something I can spray on the roses to prevent this from happening?
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August 26th, 2010 at 3:28 pm
Control: None. This bee is a beneficial insect because, like all bees, it helps pollinate crops and our wildflowers. The damage caused to the shrub is, at most, unsightly and will not permanently harm the plant. If "perfect" foliage is required, row covers are an option.
poisons are NOT………….
ps… it’s not even leaf cutter bees.. they don’t bother Petals or they’d be ‘petal cutter bees’… you’ve got another bug… here’s what the bee looks like….
http://crawford.tardigrade.net/bugs/BugofMonth23.html
look for something else attacking your blooms….
August 26th, 2010 at 3:28 pm
find their hive and throw rocks at it
August 26th, 2010 at 3:28 pm
Old panty hose is the best way. Just cut to size and wrap your precious roses and seal with a twistie. A lot of rose breeders use this technique for rose competition in rose shows. After a couple of weeks the the bees will have all their little nests built and then the roses will be safe from the little bee cutter builders. Good Luck.
August 26th, 2010 at 3:28 pm
Sevin dust–inexpensive, relatively safe.
August 26th, 2010 at 3:28 pm
water and liquid soap in a spray bottle
good luck
August 26th, 2010 at 3:28 pm
Sevin kills beneficial bees along with everything else. Honeybees are in trouble now because they are dying off from Hive Collapse Syndrome (?). It is thought that pesticides are lowering the immune systems of bees that are not killed outright, opening them up to disease throughout the hive.
People do not understand: Over 95% of our food is pollinated by honeybees. If we lose honeybees, we lose our food. This is a serious problem. There are other ways to control insects than using chemicals.
Edit: Here are articles on the subject.
http://www.greeleytrib.com/article/20070311/BUSINESS/103110103