Why do my E. subdenudata seedlings have spines?

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From0to10in2weeks
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Why do my E. subdenudata seedlings have spines?

Post by From0to10in2weeks »

Hi,

I just recently realised a kind of disconnect: my seedlings of Echinopsis subdenudata (~ 6 months old) have quite a lot of spines. But all photos of the adult versions I've seen show them "spineless". What's going on? Do they loose them as the seedlings ages?

Thanks. Best.
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metsolt
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Re: Why do my E. subdenudata seedlings have spines?

Post by metsolt »

What a coincidence, I just picked off my seed pod and am about to clean it!

Yeah, they do look different at seedling stage than they do when they're adults. Even big plants don't lose all spines right away, but gradually lose them with every new areole. There is also a possibility that it was cross-pollinated with something else, but you won't know that until they're bigger. Did you buy them or are they from your plants?
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From0to10in2weeks
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Re: Why do my E. subdenudata seedlings have spines?

Post by From0to10in2weeks »

Thanks. I bought the seeds at Kakteen Uhlig. Best.
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metsolt
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Re: Why do my E. subdenudata seedlings have spines?

Post by metsolt »

From0to10in2weeks wrote: Sat Aug 14, 2021 7:08 am Thanks. I bought the seeds at Kakteen Uhlig. Best.
Then it's a pure subdenudata, just to rule out hybrids. Don't worry, they'll decrease spination with age.
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From0to10in2weeks
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Re: Why do my E. subdenudata seedlings have spines?

Post by From0to10in2weeks »

metsolt wrote: Sat Aug 14, 2021 11:40 am
From0to10in2weeks wrote: Sat Aug 14, 2021 7:08 am Thanks. I bought the seeds at Kakteen Uhlig. Best.
Then it's a pure subdenudata, just to rule out hybrids. Don't worry, they'll decrease spination with age.
Thanks! Not rally worried. Just curious.
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7george
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Re: Why do my E. subdenudata seedlings have spines?

Post by 7george »

These need to be thinned out 2ce a year to avoid killing each other... or letting them grow further.
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Lupask01
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Re: Why do my E. subdenudata seedlings have spines?

Post by Lupask01 »

7george wrote: Mon Aug 30, 2021 7:01 pm These need to be thinned out 2ce a year to avoid killing each other... or letting them grow further.
BTW,
I also have a cluster of Astrophytum asteria similar as the post. They are about 1 year old but their root system are entangled to each other. Is there any solution to separate them without damaging those tiny taped roots.
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greenknight
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Re: Why do my E. subdenudata seedlings have spines?

Post by greenknight »

No, damaging the roots is unavoidable. Not a problem, they will soon grow more roots.

Hanazono, the CactiGuide member with the most experience raising A. asterias, cuts off the tap roots when he transplants them, he says this reduces the risk of rotting. See: http://www.cactiguide.com/forum/viewtop ... 16&t=36859
Spence :mrgreen:
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From0to10in2weeks
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Re: Why do my E. subdenudata seedlings have spines?

Post by From0to10in2weeks »

The longer spines are indeed disappearing... Best.
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