Daylilies forum: DLs, thrips and neem oil...

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Name: Celia
West Valley City, Utah (Zone 7a)
Pour vivre parmi les fleurs
Irises Garden Photography I was one of the first 300 contributors to the plant database! Celebrating Gardening: 2015 Butterflies Birds
Cat Lover Enjoys or suffers cold winters Hummingbirder Plant Identifier
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Zencat
Jun 28, 2015 10:37 AM CST
So last year all my DLs had thrips. It took me awhile to figure out what was causing bud abort and deformed flowers and it was quite late in the year. This spring I treated them with neem and am now having a much better flower season.

And then I have bud abort again. I checked...yup. Thrips. Can I treat them again now or should I wait until they're done flowering?

I have been removing the spent flowers and putting them in the trash. My Kwanzo and NOID red are toast, though. Not one flower. The others are flowering along happily. Just a dry bud here and there.
Name: Celia
West Valley City, Utah (Zone 7a)
Pour vivre parmi les fleurs
Irises Garden Photography I was one of the first 300 contributors to the plant database! Celebrating Gardening: 2015 Butterflies Birds
Cat Lover Enjoys or suffers cold winters Hummingbirder Plant Identifier
Image
Zencat
Jun 28, 2015 10:38 AM CST
I should also mention our temps are 100+ right now.
Name: DancingGenes
Western WA (Zone 8b)
Daylilies Dog Lover Hummingbirder Region: Pacific Northwest
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DancingGenes
Jun 28, 2015 5:30 PM CST
Open up the aborts fully to see if there are any small maggots. I had a lot of thrips and thought that was what caused the aborted blooms. But it was this.
http://www.daylilies.org/ahs_dictionary/gallmidge.html
Much harder to eradicate.
A True gardener will purchase a thousand plants before thinking of where to put them :P
Name: Celia
West Valley City, Utah (Zone 7a)
Pour vivre parmi les fleurs
Irises Garden Photography I was one of the first 300 contributors to the plant database! Celebrating Gardening: 2015 Butterflies Birds
Cat Lover Enjoys or suffers cold winters Hummingbirder Plant Identifier
Image
Zencat
Jun 28, 2015 5:50 PM CST
http://www.daylilies.org/ahs_dictionary/thrips.html

This one is my critter. Dark brown and black. I open the flowers and there they are.
Name: DancingGenes
Western WA (Zone 8b)
Daylilies Dog Lover Hummingbirder Region: Pacific Northwest
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DancingGenes
Jul 1, 2015 1:59 AM CST
You can treat thrips any time of year. But any insecticide is best applied early in the growing season. Then applied again additionally through the year. Neem oil is more a preventer than killer and must be applied weekly until the population goes down, then apply every few weeks.
You could also use a systemic insecticide which will kill any insect. So it's best applied very late in the evening so it doesn't kill the bees. Bayer tree and shrub is one which comes in pellets that soak into the soil when watering, and also sold as a liquid which is poured at the base of plants and trees. But the instructions are vague for daylily application, and the product isn't recommended by bayer to use for daylilys. it's a 12 month systemic.

Bayer Advanced which I think is applied every 3 months. That's what I used, sprayed it all over when it was almost dark out. I don't think i applied it very well, as I still see thrips but it's an improvement. But it wont kill whatever thrips are already inside the buds. So it must be applied every 3 months to kill the cycle of the thrips. Soil must be sprayed also. I think also Bayer Rose and flower care kills thrips too.
A True gardener will purchase a thousand plants before thinking of where to put them :P
Name: Celia
West Valley City, Utah (Zone 7a)
Pour vivre parmi les fleurs
Irises Garden Photography I was one of the first 300 contributors to the plant database! Celebrating Gardening: 2015 Butterflies Birds
Cat Lover Enjoys or suffers cold winters Hummingbirder Plant Identifier
Image
Zencat
Jul 1, 2015 9:03 AM CST
Thank you. I have Bayer all in one rose care. I will get some of tbe other and see how they work.
Name: Becky
Sebastian, Florida (Zone 10a)
Celebrating Gardening: 2015 Daylilies Hummingbirder Butterflies Seed Starter Container Gardener
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Lover of wildlife (Black bear badge) Birds Ponds
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beckygardener
Jul 4, 2015 7:11 AM CST
I follow Brian Reeder's blog and read his notes whenever he posts a new page to his blog site: http://daylilybreeder.blogspot.com/

He just recently posted a new page and guess what? The article includes his observations concerning thrip damage! But what he wrote made me go, "Ah ha! I should have paid closer attention!"

Two years ago I had some nasty thrip damage. I had noticed that some seedlings in the midst of the area of attack were unaffected by the thrips, but just dismissed it. After reading Brian's article this morning, it has now occurred to me that perhaps those seedlings that were NOT affected by thrips might just be "thrip resistant". I need to pay closer attention, take more extensive notes, and consider possibilities instead of ignoring them. My common sense did not kick in at the time, but I am learning to be much more observant and mindful of what is going on in my garden. Thrip-resistant daylilies are a possibility! Being an organic gardener, that would certainly be the answer to the thrip dilemma for me personally!
What lies behind us and what lies before us are tiny matters, compared to what lies within us.
Garden Rooms and Becky's Budget Garden
Name: Celia
West Valley City, Utah (Zone 7a)
Pour vivre parmi les fleurs
Irises Garden Photography I was one of the first 300 contributors to the plant database! Celebrating Gardening: 2015 Butterflies Birds
Cat Lover Enjoys or suffers cold winters Hummingbirder Plant Identifier
Image
Zencat
Jul 4, 2015 9:26 AM CST
Interesting blog. Thanks for sharing that. Thumbs up
Name: Becky
Sebastian, Florida (Zone 10a)
Celebrating Gardening: 2015 Daylilies Hummingbirder Butterflies Seed Starter Container Gardener
Charter ATP Member I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Lover of wildlife (Black bear badge) Birds Ponds
Image
beckygardener
Jul 4, 2015 9:28 AM CST
You are quite welcome, Celia! I tip my hat to you.
What lies behind us and what lies before us are tiny matters, compared to what lies within us.
Garden Rooms and Becky's Budget Garden

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