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Help! Vegetable seedlings turning purple/falling over

Posted by therealdiehl91 none (My Page) on
Thu, Apr 10, 14 at 11:29

I planted brussel sprout and broccoli seeds in jiffy pelets about 4 weeks ago and re-planted them into these bio degradeble pots about 10 days ago. They were doing great until 3 or 4 days ago I started noticing them falling over and turning purple. In the begining they were just under a 2ft T5 bulb, hung about 1-2 inches from the leaves and left on for about 20 hours a day. When I transplanted them I started putting them in a south facing window for about 8 hours and supplimenting the rest of the day with the T5. I've read that purple can be caused from a phosphorus deficiency but can that really happen at such a young age? Or maybe the south facing window doesn't get enough light? I have more pictures if needed, hopefully you can see the slight purple in the stem and underneith the leaf. Any help would be much appreciated!


Follow-Up Postings:

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RE: Help! Vegetable seedlings turning purple/falling over

They don't look like they're falling over, they look like they're straining for light.

But the real problem I see is that you didn't thin or separate the seedlings when you transplanted them to the larger pots.


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RE: Help! Vegetable seedlings turning purple/falling over

Should I thin them out now by sniping out the weaker ones?


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RE: Help! Vegetable seedlings turning purple/falling over

  • Posted by digdirt 6b-7a North AR (My Page) on
    Thu, Apr 10, 14 at 13:07

The purpling is normal fro young seedlings. Lots of discussions here about it.

The leggy appearance is not normal - too little light, over-crowding, and very likely overly warm ambient air temps where they are growing. All make seedlings leggy.

Since you didn't separate them before transplanting then yes you will have to snip off the extras now.

Dave


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RE: Help! Vegetable seedlings turning purple/falling over

What is your location ? zone number ?

Why don't you plant them outside ? They are cool crops and can stand cold and maybe light frost.
But you will have to harden them off first.


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RE: Help! Vegetable seedlings turning purple/falling over

I live in se wisconsin which I believe is zone 5b. This week has really been the first week above freezing temps and we still may get snow early next week. I know they are able to stand colder temps but even this young? Also I'm still trying to plan out how I will harden them off seeing as I work full time.


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RE: Help! Vegetable seedlings turning purple/falling over

Yes, I've held off putting my youngest brassicas out because of the forecast for this weekend. They're about at the stage of yours, and I would have done it this week, but now I'm wondering if I'll have to cover the ones that are already out there.


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