Lilies forum→Asiatic Lilly

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42164
Chug2003
Jun 8, 2020 5:39 PM CST
The Asiatic Lillies that I have in containers the leaves have started to turn brown and black. Some of the flowers have also started to have translucent spots. One container some of the flowers I had to cut the stems down because the had also started to turn black. The black and brown leaves started turning at the top of the plant and went down the stem. There were two that started at the bottom and worked up the stem. Another container the leaves are good but the flowers have become thin and transparent. The containers have drainage holes, and I did fertilizerd the flowers at the beginning of the season. I also thought they might have a fungus so I sprayed them with baking soda/water that I read about. It did not hurt the flowers or help. I checked the roots for rot and their good. There are also bugs/pests that I could see.
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Name: Joshua
Melbourne, Victoria, Australia (Zone 10b)
Köppen Climate Zone Cfb
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Australis
Jun 8, 2020 7:05 PM CST

Moderator

The spots do look like a fungal issue to me. How often do you water? If the stem is going black very early, it could be bulb rot as well.

Individual flowers will thin and fall apart after 5 to 8 days, as they generally only last about a week. If they are only lasting a couple of days, though, this would also suggest a problem.

Generally Liliums aren't happy if you transplant them whilst in leaf (with certain exceptions), so if you dug them up to check the bulb and roots this may have damaged the root system and the stem will start to die off as a result. This won't kill the plant, but it will set it back a bit whilst it recovers.
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42164
Chug2003
Jun 8, 2020 7:28 PM CST
I usually only water every two days. If the weather is warmer I water every day. I try to water about 1 to 2 inches of water per container. The black and brown starts in the leaves and will stay there for a couple of days. I did try a fungus spray but I don't think it did anything ( bad or helped). I only checked one plant bulb to see because it was the worst of all the plants. Thanks for the idea about the fungus I think I will try different type of spray. I tried baking soda and water the first time but I think I will try some thing different. Thanks again and if you have any other ideas I would like to hear from you.
Name: Joshua
Melbourne, Victoria, Australia (Zone 10b)
Köppen Climate Zone Cfb
Region: Australia Bookworm Cat Lover Lilies Orchids Irises
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Australis
Jun 8, 2020 7:49 PM CST

Moderator

I suspect you may be watering too often and this is creating a humid environment for fungal problems to develop. I suggest cutting back to watering thoroughly once a week or twice during hot weather.

I'm also going to move this thread to the Lilies forum so that other growers can suggest treatment options.
Plant Authorities: Catalogue of Life (Species) --- International Cultivar Registration Authorities (Cultivars) --- RHS Orchid Register --- RHS Lilium Register
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Name: Connie
Willamette Valley OR (Zone 8a)
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pardalinum
Jun 8, 2020 8:03 PM CST

Moderator

The spots are what we call pheasant eye spots and are caused by botrytis fungus. Notice how the damage spreads out from each spot. There can be spores in/on the soil under the plant and when it rains or you aggressively water it can splash the spores up onto the leaves. Keep the soil around the lily cleaned up by removing dead debris that has fallen off the lily.

From what you say about watering, I think that is too much water and is responsible for the remaining damage. The bulbs could be rotting from it. Avoid this problem by using well draining soil so that water runs right through then don't water again until completely dry.

My lilies are planted in the ground so they get the spring and early summer rains. They need and use some water until bloom then after that they aren't actively growing, they just sit there until leaves fall in the fall. If you water a lot, especially the pot grown lilies, that is really when rot can happen. The top photo shows that the lilies have finished blooming. They should not need much water. If they are in pots I would try to find the coolest shady place to store them until fall.

Then take them out and check the bulbs for health. If they are black and falling apart toss them in the garbage, not compost. Try again for next year but come back and talk to us so we can walk you through it. I can say I have lost many lilies trying to grow them in pots but some people are quite successful at it.
42164
Chug2003
Jun 8, 2020 8:33 PM CST
Thanks for everyone's help. I will definitely take everyone advice especially about the water. I have several large containers of lillies so I will move the one that has the fungus away from the others. I plan on trying to find a fungicide to try and save those. Thanks for everyone's help and advice.
Name: Tracey
Midwest (Zone 5a)
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magnolialover
Jun 9, 2020 5:29 AM CST

Moderator

Fungal disease can be tricky, as once it sets in it is pretty tough to stop it, at least that has been my experience with lilies. Good fall garden clean up, getting rid of old stems (not composting them) can aid in helping it not happen next year. Even then, weather can play a role and take its toll.
Name: Luka
Croatia (Zone 9a)
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Lucius93
Jun 9, 2020 5:35 AM CST
Weather is the main reason for fungal disease (here in my country).

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