Cactus and Tender Succulents forum: Seeds-Seedlings-Moss

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Name: Calin
Weston-super-mare UK (Zone 7b)
Bulbs Lilies Plant and/or Seed Trader
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fixpix
Aug 13, 2013 2:22 AM CST
Any of you had to deal with this?
I got two packets of Echinocereus seeds, hardy ones. Planted both in a plastic container, half-half.

One of the two kinds germinated nicely, the other one slower. For a long time, there was ZERO germination in one half of the container.
What I did was I kept watering.
Seeds need moisture, right?

I could see the seeds looking great, but lazy.

After a while, I saw one seed germinate, then another, and so on.
Problem is, I also got moss in the container.

DILEMMA: stop watering - the rest of the seeds won't germinate.
keep watering - will this moss hurt the little seedlings?

Name: 'CareBear'

Sempervivums Hostas Dog Lover Irises Amaryllis Cactus and Succulents
Region: Pennsylvania
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Stush2019
Aug 14, 2013 3:18 PM CST
I have heard of this before. The moss will complete with light and food from the seedlings. Best to not have the moss in the first place. I don't have any answers. Will keep watching to see what advise you get. Good luck.
Stush
Name: Mark Mallon
seattle wa
Region: United States of America Region: Pacific Northwest Region: Southwest Gardening
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a2b1c3
Aug 15, 2013 10:54 AM CST
Iron sulfate, but it can kill seedlings. You could adjust ph but that will take time and might not work or be worth the effort. Try increasing light and putting a fan in the room
DON'T PANIC
Name: 'CareBear'

Sempervivums Hostas Dog Lover Irises Amaryllis Cactus and Succulents
Region: Pennsylvania
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Stush2019
Aug 15, 2013 12:45 PM CST
Thanks again Mark. So a higher PH will kill or stop moss from forming? Don't cactus like a higher PH?
Stush
Name: Calin
Weston-super-mare UK (Zone 7b)
Bulbs Lilies Plant and/or Seed Trader
Image
fixpix
Aug 16, 2013 2:22 AM CST
Oh well... That pot is on balcony, on a table, if I brought it closer to window, it may have too much sun (although, being on North, it's kinda OK... I only have it in the morning).
And... anyway I've got quite enough seedlings of one kind, and now about 10 of the slower one.
Un-germinated seeds still visible... but I am thinking what's best for the plants I already have.
I will water less and hope the moss will go away.
Name: Mark Mallon
seattle wa
Region: United States of America Region: Pacific Northwest Region: Southwest Gardening
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a2b1c3
Aug 16, 2013 8:58 AM CST
@ stush - yes most moss, not all , likes acid soil. I would guess that most cactus do as well but i have never had to adjust ph either way in cactus or succulent plantings so i don't really know.

And can you cut up newspaper and wet it and try to ' smother ' the moss by making a creative weed cloth around the seedlings? Just guessing
I assume you can not manually remove it. Water less is probably your best bet and keep a good airflow and use clean tap water. Good luck I'm all ears!
DON'T PANIC
Name: Mark Mallon
seattle wa
Region: United States of America Region: Pacific Northwest Region: Southwest Gardening
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a2b1c3
Aug 16, 2013 9:00 AM CST
have you heard of this http://en.wikipedia.org/wiki/Bordeaux_mixture
or Cheshunt Compound its not made anymore but look at the ingredients
DON'T PANIC
Name: Mark Mallon
seattle wa
Region: United States of America Region: Pacific Northwest Region: Southwest Gardening
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a2b1c3
Aug 16, 2013 9:09 AM CST
heck, you know i just put zinc flashing up on my roof to prevent moss, i got an idea might actually work.
Use a piece of zinc in your water bottle.
DON'T PANIC
Name: Jonna
Mérida, Yucatán, México (Zone 13a)
Garden Procrastinator The WITWIT Badge Region: Mexico I was one of the first 300 contributors to the plant database! Ponds Tropicals
Enjoys or suffers hot summers Plumerias Plays in the sandbox Dog Lover Cat Lover
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extranjera
Aug 17, 2013 9:45 AM CST
I use hydrogen peroxide to kill algae and I wonder if spraying with that would kill the moss and not harm the seedlings? Dilute it a bit and see.
A day without sunshine is like, you know, night.
Name: 'CareBear'

Sempervivums Hostas Dog Lover Irises Amaryllis Cactus and Succulents
Region: Pennsylvania
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Stush2019
Aug 18, 2013 11:26 AM CST
Great ideas. In most information about plants. It seems they leave out the PH requirements of plants. Why I though cactus liked higher ph is unknown. Thanks for the update.
Name: Calin
Weston-super-mare UK (Zone 7b)
Bulbs Lilies Plant and/or Seed Trader
Image
fixpix
Aug 19, 2013 2:04 AM CST
Oh I know that Bordo mix... dad sometimes used it on grapevines....
Would be too complicated to make just for a small pot of cacti Smiling
H. peroxide looks ok. I have some.
But I started watering less and I will also move it towards the window (= more sun) and hopefully the moss will just vanish! :)

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