Daylilies forum: Daylily color weakness or splotchyness in darker (red, rose) colors

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Name: Henry
Zone 7, Outside Baltimore (Zone 7b)
Scapehunter
Jun 27, 2017 4:42 PM CST
What causes this? I'm talking about the white patches on the lower left sepal.
Thumb of 2017-06-27/Scapehunter/d492a3

I don't see any obvious insect damage --no areas bitten through or roughness.

It is only on certain colors: red, rose, dark pink. I notice this on many of the newer varieties, and I thought these cultivars: 1) Are pressing up against the plant's ability to create such large blooms with saturated colors and 2) Are recent additions to my garden, hence not at full strength.

Last year, I sprayed one cultivar that had this problem with insecticide (just the buds) and future blooms were better. But I don't want to spray if not necessary.

I have never seen any insects. I have seen thrips on yellow cultivars early in the season. I would imagine thrips are harder to see on darker colors.

Another theory is lack of soil nutrients.

Thanks!



Name: Elena
NYC (Zone 7a)
Daylilies Plant and/or Seed Trader Winter Sowing Hybridizer Peonies Vegetable Grower
Seed Starter Organic Gardener Composter Container Gardener Spiders! Celebrating Gardening: 2015
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bxncbx
Jun 27, 2017 5:58 PM CST
I see this pretty often on the FFO for most of my tet daylilies with lots of substance. After the first bloom (which is typically pretty splotchy on darker colors) it only happens rarely.
I have always wondered what caused the first blooms to look so bad.

Here's an example from this season. This is a seedling from 2015 that bloomed for the first time this year. The first picture is the FFE and the one below is today's bloom (second flower).

Thumb of 2017-06-27/bxncbx/121e00


Thumb of 2017-06-27/bxncbx/e5e17f
What a difference a day makes! And the second bloom got rained on so I was expecting another sad bloom.

Name: Henry
Zone 7, Outside Baltimore (Zone 7b)
Scapehunter
Jun 28, 2017 9:06 AM CST
I thought it might be thrips. I sprayed one cultivar and the future blooms were MUCH BETTER. However, later blooms are often better.

I am trying more experiments --hopefully so that I will not have to spray unnecessarily. I am spraying some cultivers before the first bloom.

I am mostly spraying the buds and sometimes the stalk if it has roughness/scaling.

I also sprayed the buds of most of the varieties with splotchy blooms.


Name: Elena
NYC (Zone 7a)
Daylilies Plant and/or Seed Trader Winter Sowing Hybridizer Peonies Vegetable Grower
Seed Starter Organic Gardener Composter Container Gardener Spiders! Celebrating Gardening: 2015
Image
bxncbx
Jun 28, 2017 10:30 AM CST
I'd be interested to see your results. I never spray my daylilies and I've never seen any thrips but typically my first bloom is a mess. They clear up on their own so I never even thought to treat them. I honestly just thought it was something that happens with daylilies. The only thing insects I see on my daylilies are ants and ladybugs. I did see some sort of inchworm on a bud yesterday and plucked it off. That bloom was damaged but in an eaten kind of way. I've never seen that type of caterpillar before but I'll be on the lookout for it now.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Jun 28, 2017 11:08 AM CST
If you want to check for thrips you'd need to try knocking buds onto white paper or dissect a bud or two over white paper so that they can be seen when they run out. They're tiny and secretive and not easy to see otherwise. They get inside the buds before they open. Usually people figure they have them by the damage rather than a visual sighting. Sometimes it is hard to tell whether the splotches are from something environmental rather than thrips though and presumably sometimes it could be both. I wouldn't say I was 100% certain Henry's flower splotchiness is from thrips but circumstantially combined with the scape damage it suggests it could well be.
Name: Elena
NYC (Zone 7a)
Daylilies Plant and/or Seed Trader Winter Sowing Hybridizer Peonies Vegetable Grower
Seed Starter Organic Gardener Composter Container Gardener Spiders! Celebrating Gardening: 2015
Image
bxncbx
Jun 28, 2017 11:33 AM CST
I'm just thinking my issue is not thrips because I can't see how they would infest the first bud but none of the later ones. If most of the buds were splotchy I'd think insect damage but just the first one? This has been going on in my garden for years. If it is insects they do so little damage I'm okay with them staying in the garden.
Name: Henry
Zone 7, Outside Baltimore (Zone 7b)
Scapehunter
Jun 28, 2017 1:33 PM CST
I found two dead thrips on one of the blooms I sprayed. They are very small and thin. I have always seen them on the first yellow blooms of the year. I normally throw those blooms away and do not compost.

So, yes visual confirmation of thrips, but that might not be the whole story.

The cultivars that have the most damage are newer, red varieties that are located with morning shade (the location in shade may just be by chance however).

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