On Oct 16, 2006, kennyso from Markham, ON (Zone 5b) wrote:
If I'm not mistaken, these bees do not do damage [not to rose at least] but they will land on a rose leaf (not the petals) and cut a perfect circle in the middle of the leaf. Interesting bug, but I'm not sure I would want my rosees to have leaves with a circle in each! They do absolutely NO harm to the whole plant's health
On Dec 21, 2008, jvivier from Las Vegas, NV wrote:
The cutter-Bee is an infestation in Southern Nevada. It devastates
all trees or bushes with tender leaves or flowers. Many of my lagerstroemias (Crape Mirtyle ) have died for being deprived of most
of their leaves.
This bee is very difficult to kill because of its speed and I don't know
any chemical that can fight it.
Their action is simple: the bee cuts a first almost perfect circle of
leaf and takes it to the bottom of a hole in the trunk of a dead tree; this as food for the larvae it lays right after. Then it cuts another piece that it uses to obturate the hole to protect the larvae. I don't have a picture of a ravaged tree but next summer I will be spoiled for choice.
Not sure if this is the kind of leaf cutter bee we have , but it does do alot of damage to trees, shrubs, etc. I have not found anything to get rid of these guys. If anyone comes up with some way to kill, or repel, please pass it on. I hate these little guys!
On May 23, 2009, BarbMarch58 from Wickliffe, OH wrote:
For the first time in 20 years of outdoor gardening, I found the leafcutter bee feasting merrily on our Rudbeckia leaves (bloom time has not hit us yet in Wickliffe, OH). It was able to make fairly perfect circles in a number of leaves - and in quick order. I'm not happy to see these for my plants' health and certainly hope they don't sting humans.