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I hope you can help me identify the problem with these Ipomoeas (Morning Glory).

It's actually two varieties of seeds I sowed together:

  • Ipomoea Violacea (those with tinnier leaves, I'm not sure)
  • Ipomoea Tricolor Heavenly Blue (those with larger, rounder leaves, I'm not sure).

As you can see from the pictures, some whitish, silvery patches are appearing on leaves.

I've already looked at the following similar questions...

...but I am not sure it's the same problem because in those questions it seems that the leaves became just decolored, while on mines it seems more that some of the leaf tissue came off, and the lower layer of it became exposed (the patches).

Relevant facts:

  • I sawed the seeds approximately one month ago.

  • Plants have been taking 5-6 hours of direct sunlight and 4 hours of indirect sunlight a day.

  • When plants' height was half of what it is now, there was an hailstorm, resulting in very few leaves being clearly broken/cut, but this seems to not have to do with the whitish patches, because they also started appearing on intact, unbroken leaves. However - I am not sure if this is important - when the hailstorm happened, the hail on the ground did not unfreeze immediately (it was at night).

  • There is no trace of insects on the top face or bottom face of the leaves.

  • Concerning watering, I've watered them every time I saw the ground become dry, so for the first two weeks, approximately once every 3-4 days. Then two weeks ago it got warmer, so I've started watering them more (once every 2 days). Then last week got even warmer so since then I've started watering them almost daily. These days maximum daytime temperature is 22° Celsius. At night it gets to 8-10° Celsius.

  • The patches appeared initially only on some plants, and now more of them are showing the same thing, although not all of them.

  • It seems leaves are still growing, although slowly, and new leaflets are coming out.

  • I used a universal soil and did not add anything to it.

Sorry if I made this question too long, but I tried to be as much detailed as I could. Please let me know if there is something I might have forgotten to include.

Thanks a lot in advance for your help!

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2

I started watering even more and it fixed it :)

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