Coneflower Rosette Mite
sunnyborders
10 years ago
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wieslaw59
10 years agoNevermore44 - 6a
10 years agoRelated Discussions
This is why a have a love hate relationship with cone flowers
Comments (7)It's definitely coneflower rosette mite in Rouge's pictures. I feel sure that coneflower rosette mite is coming into our garden from breeders and/or nurseries with infested stock. Picture below (today): As of 5(+) years ago, there was also a group of 3 'Hot Papaya' immediately to the right of and behind the lungwort. It was removed, heavily infested with the mite, several years ago. The mite doesn't appear to have spread to the 'Summer Sky' and it also doesn't appear to have spread to a clump of 'Magnus' which was 10 foot to the right of the 'Hot Papaya'. At the same time, I have removed heavily mite infested Echinacea from locations in our flower beds which were nowhere near any other existing Echinacea. Judging from my experience, perhaps a lot of the recent and current nursery stock available is infested. Perhaps the use of industrial miticides keeps the mite under control while the plants are with the breeders and/or in other greenhouses. This post was edited by SunnyBorders on Thu, Jul 17, 14 at 11:49...See MoreNo Petals on Volunteer Cone Flower Plant
Comments (18)I checked with Bayers 800 number and they said their product does not cover coneflower rosette mite. Andre Viette's nursery didn't have an answer either, but I did find one right here at this website. Here's what I learned . . . On Gardenweb there was a similar post in early July with lots of replies regarding this mite and AY. All there came up with no fix for the coneflower mite. Most everyone replying there said they were going to get rid of all their coneflowers! There was one response though that seemed to walk a middle line. Here it is quoted in the next paragraph: "But for the echinacea, I have had infected plants that i just remove the infected blooms as i saw them ... without going to extra step of "litter removal" later in the year.... and then later that same year or the next season they bloom out just fine. For me is on par with the work of other garden jobs... without being too much of a pain." I'd like to give her technique a try. What do I have to lose? I don't want to dig out all my coneflowers! The mites get into SOME of the buds, but apparently not all. Cutting off what looks like an affected flower in the spring isn't too much work. You'd get the mites then and could dispose of them so they don't hatch out to return to your garden the next year. The next step would be to get rid of the foliage in the fall so eggs can't winter over. And if you can, pull away all the mulch and you'd be done. Maybe this will work for you. I'd like to know what they're going to replace their coneflowers with??? In Heaven there will be NO gardening problems!...See MoreEchs aster yellows
Comments (24)I had a ech that was highly infected last summer fall. About 90% of the late summer into fall blooms where mite infected. I removed every single bloom that showed signs and trimmed it to the ground a bit early last fall. I didn't remove the leaf mulch around the plant like you could try to get any eggs... But this year the plant has only had a smal fraction of infected blooms... The rest are just fine and the plant is growing very well. I see plants being sold tha are obviously infected ... So you would have to swear off the new coneflowers if you didn't want any chance of mites.... Or grow all from seed.... Which is a very viable option now with the great colors you can get from the 'Cheyenne spirit' seed line....See MoreCut back phlox, coneflower etc.
Comments (12)Personally, as said, I invariably deadhead (after flowering) and cut back summer perennial typically before the late season appearance of powdery mildew can really get going. Cutting back for me has additional advantages, including getting sunlight and water through to the perennials of spring which are close to ground level. It goes without saying that mildewed summer hangovers do nothing for the look of the fall perennial garden. With rare exceptions (e.g. Japanese primulas), I also don't want perennials to seed or want perennials that seed. The main reason is that seeding (like running) impedes mixed perennial gardening maintenance. There's a number of other good reasons to stop seeding, including the one mentioned above (namely, the degenerate offspring of choice perennials). I am slow to deadhead the Echinacea because of the (migrating) birds, but still keep thinning the spent heads out. We seem to have recovered from coneflower rosette mite, but I'm especially keen to cut the Echinacea down to ground level before freezing....See Moreeclecticcottage
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Darrell Nesmith (AR 7b/8a)