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Northeastern Germany
Reysh
Jun 12, 2020 8:52 AM CST
Hi Gardeners!

I had a couple plots of land this year to fill as I wished, and I was most excited about growing lupines from seed -- my first time. Things started out well, but now, all of a sudden, the young plants seem to be struggling, and I don't know why. Does anyone have an idea?

In one plot, there seems to be small brown spots on the leaves, which are also corkscrewing some. This plot gets watered twice a week, not heavily, and has morning sun and afternoon shade.

In the other plot, the leaves are reddish purple and also twisting a bit. This plot now gets watered three times a week by a drip system (though it was being watered every day until a week ago) and has morning shade and afternoon/evening sun.

Does anyone know what the cause(s) may be? Anthracnose for the former (I hope not...)? Too much water for the latter? I'd appreciate any insights or ideas you have to share from experience.

Thank you all in advance for the assistance!




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Name: one-eye-luke US.Vet.
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oneeyeluke
Jun 12, 2020 11:14 PM CST
Too much water at this time. You need to have longer dry cycles between waterings. Soakers hose are soil flushers and will wash away good nutrients over a period of time.
NOT A EXPERT! Just a grow worm! I never met a plant I didn’t love.✌
Northeastern Germany
Reysh
Jun 14, 2020 1:54 AM CST
Thanks, oneeyeluke! I wondered if they had been receiving too much water. I guess the info that I read about lupines coming from British Columbia and liking cool, moist soil led me to overwater. I'll cut back on the watering cycles and see if they like that.

Jcspivak
Jun 20, 2020 10:12 AM CST
lupine leaves with light brown spots, eventually withering and dying. Started with lupine but now affecting other plants. All plants are in pots. Tried a fungicide but not helpful.
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I also have this problem but don't know cause.

Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jun 20, 2020 11:09 AM CST
Maybe you should check your soil pH?
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Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 21, 2020 12:42 PM CST
Those spots look like you've been watering during high sun... water droplets act like magnifying glass, concentrating sunlight and causing pinpoint burns.
The plural of anecdote is not data.
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 21, 2020 12:44 PM CST
And I don't think your initial issue was overwatering, I water my lupine every two days unless it rains.
The plural of anecdote is not data.
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jun 21, 2020 2:34 PM CST
Turbosaurus said:Those spots look like you've been watering during high sun... water droplets act like magnifying glass, concentrating sunlight and causing pinpoint burns.


Time to debunk another myth:
https://www.abc.net.au/science...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: sumire
Reno, Nevada (Zone 6a)
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sumire
Jun 21, 2020 3:36 PM CST
I agree, pH could be the problem.... Lupines tend to live in areas with thick woodland debris or water that is slightly acidic (rainwater level). I can't grow them unless I amend my soil a LOT because my water is alkaline. (I have trouble with rhododendrons and azaleas too.) They start out great, then slowly fade away in a manner a lot like your pictures.
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Name: Empress of India
Hatfield MA (Zone 5b)
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EmpressOfIndia
Jun 21, 2020 4:07 PM CST
They're biennials! Mark them -- they will wow you next year.

First year they're growing under the ground; second year above. First year they look like they aren't actually sure if they're plants.

After this year you can throw seeds around every year.

Not to worry!

(I have actually done/do this....)
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Name: Carol
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ctcarol
Jun 22, 2020 4:58 PM CST
Interesting study, Daisy, but I'm not going to water or spray the leaves in the sun to test it. Hilarious!
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Jun 22, 2020 5:33 PM CST
Go ahead, be daring! Hilarious!
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Calif_Sue
Jun 22, 2020 10:27 PM CST

Plants Admin

There are two members asking questions about their plants and unfortunately, I can't split off the second question to it's own thread because the answers following it are for both members. Green Grin!
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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Jun 23, 2020 12:14 AM CST
Well that's confusing... Blinking
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 23, 2020 8:23 PM CST
Mine are blooming first year. You can go find my post Started in March with an update this week.


The plural of anecdote is not data.
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 23, 2020 8:31 PM CST
Not every internet link is data.
The plural of anecdote is not data.
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 23, 2020 8:44 PM CST
From your authority.."in reality water droplets evaporate off far too fast for this lens effect to ever actually happen.". Unless it's a fuzzy leaf
The plural of anecdote is not data.
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 23, 2020 8:45 PM CST
Like a lupine
Thumb of 2020-06-24/Turbosaurus/70d91e

The plural of anecdote is not data.
Name: Paula Benyei
NYC suburbs (Zone 6b)
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Turbosaurus
Jun 23, 2020 9:02 PM CST
Heres the un- evaporated water and the accompany burns your article says dont happen. The article says water evaporates before it burns.. not that the lensing is untrue.

So Daisyl, do you still believe myth busted? You are looking at water droplets that havent evaporated and 50% or more have a concurrent burn..
The plural of anecdote is not data.
[Last edited by Turbosaurus - Jun 23, 2020 9:13 PM (+)]
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Northeastern Germany
Reysh
Jun 28, 2020 2:58 AM CST
Wow, it seems there are many different ways of going about taking care of lupines (and different varieties must grow at different speeds, since I planted mine a couple months ago in April from seed and one has already begun to bloom)! The pH level suggestion is an interesting one. I have stopped watering the lupines from the hose and am using only rain water collected in a barrel. (I'm also watering at the base and not from overhead to prevent lensing, just in case.) The ones that get morning sun have responded positively--no more corkscrewing or brown spots on the leaves.

The ones receiving afternoon sun aren't looking much better, but since I stopped watering that bed so often, the other plants in it, such as nicotiana and agastache, have begun to thrive. I think it was being overwatered. I'm hoping the lupines there begin to perk up, too. If all else fails, I'll plant some fresh seeds next season and start over.

Thanks everyone for your input!
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