Insectical soap for Rose Weevils. And pick them off. Remove all mulch around the roses as well - the larvae hide in it.

Ah, Lily Leaf Beetle. Yes, they are in Alberta. They have been here for a couple of years at least. My MIL had a ton of them. I found one beetle on my lilies this year and squished it good, however just yesterday I found a ton of pupae covered in their poo-poo coat. I washed most of them off with the hose and scraped the rest off with my knife.

I highly recommend an insecticide for them. I hate using chemicals of any sort, "organic" or whatever, but Sevin is really your only choice. It breaks down within 24 hours. You need to spray the plants and ground with it, avoiding the flowers.

And you need to be diligent. They will be active right till freeze up.

Have you tried Neem oil?

Thanks Shazam for the suggestions. I did actually pick up some Sevin today, but it was too windy here to use it. Instead I went and picked off all the larvae and adults that I could find on the lilies, and went searching for weevils too since I was out with a pail of soapy water to drown them in. Hopefully tomorrow I can get out and try to battle some more.

I have 3 morden sunrise roses that have been absolutely covered in buds, but I have had barely any blooms since the weevils decimiate each and every one. My other rose bushes have weevil damage, but some of the blooms actually do manage to open, although they don't look as nice as they could. I will work on getting the bark mulch moved away from the roses, but how far do I need to move it? My rose bushes are in the middle of mixed beds, won't the weevils just over winter a few feet over and then crawl back over to the roses?

The rose weevil larvae don't like exposed soil, so if you keep the mulch about a two feet away from the base of the roses, they'll have extreme difficulty crawling to the roses. The birds will pick them off.

God I hate using pesticides but if your rose weevil infestation is particularly bad you might want to use the sevin there as well. Even better, try finding a b.t. that can kill them.

I recommend sevin only for the lily leaf beetle because it has literally no predators here in north america. I'm hoping someone will find a b.t. that can kill it.

Maybe the one zone difference is all they need, but from what I understand lily beetles are not hardy in most of the Canadian prairies. I have friends who got them from eggs in newly-planted lilies but they didn't return the next spring. Removing mulch or warm places might make the difference for you too.

Don't know anything about rose weevils, sorry.

The lily beetle may not be hardy in zone 3 and lower, but that doesn't really matter. They can decimate lilies in one season easily. The other big problem with them is that they're very mobile.

Okay, went out tonight and found a beetle. Sprayed it with pyrethrin spray. That killed it. Not that I think pyrethrin spray is all that safe, but if you need to use something organic there you go.

There were also a few more poop-pae. They've been busy.

Oh yeah I totally get that losing all your lilies one year would suck. I'm just saying don't panic that you will never grow lilies again, because they likely won't be back the next year, and your lilies will. It takes more than one year of complete failure to kill a lily.

What's unsafe about pyrethrin? It comes from daisies and breaks down quickly.

The problem is that since the bugs are very mobile, they will find your lilies eventually, and probably sooner than later. So even if they're not hardy here, which seems unlikely (that it, they seem to be able to overwinter here), there's still a good chance they'll show up.

Pyrethrin is actually a pretty powerful nerve agent, as is the case with many insecticides. The problem is that insect nervous systems are actually pretty similar to ours. Humans have an enzyme that can break down pyrethrin before it does any harm, but young children don't actually produce that enzyme, so you can actually cause some harm to them with it. Also pyrethrin is terribly toxic to fish.