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Leaves turn dark (reddish) on annual transplants.

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alaskagardengirl
Joined: 5/23/2009
Location: Alaska
Posts: 6
Posted: May/23/2009 2:31 PM PST

Does anyone know what causes this? On some of my annuals, marigolds, dianthus & lobelia are the worst, when I transplant them outside, no matter how long I have hardened them off, the leaves will turn a dark burgundy color. The plants seem to go into shock and will not grow any new green leaves for 2-3 weeks. I have been gardening for 20 years and this happens every year to me. I have talked to many friends and they never have this happen. HELP please. We have such a short growing season in Anchorage that a 3 week delay is not very good! Renee
witt blog photos
Joined: 3/28/2008
Location: Lancaster, SC
Posts: 16629
Moderator
Posted: May/24/2009 1:40 AM PST

I wish that I could answer your question, but I've never had that problem. Maybe some of the Garden Guide folks in the colder climes can help you.
emily
Joined: 2/19/2009
Location: Shreve, Ohio
Posts: 94
Posted: May/24/2009 5:05 PM PST

It might be that they are getting acclimated to the outdoor weather. Is it something that eventually goes away, or is it permanent that the leaves stay this color? This is only a thought. I can see if the people that own the greenhouse that I work at if they would know of anything about this.
alaskagardengirl
Joined: 5/23/2009
Location: Alaska
Posts: 6
Posted: May/25/2009 11:01 AM PST

Hi,

The leaves that turn dark will stay that way and eventually it will start growing new normal leaves, it just takes quite a while for the new leaves and flowers to start growing. Thanks for the help. Renee
TeresaM photos
Joined: 5/26/2009
Location: Dayton, Ohio
Posts: 11
Posted: May/26/2009 12:55 PM PST

Hello!

Even though the outside temp maybe condusive to planting, cold soil can cause the darkening of the leaves. They will rebound once the soil is warmer.

Hope this helps,

T.
alaskagardengirl
Joined: 5/23/2009
Location: Alaska
Posts: 6
Posted: May/27/2009 12:22 AM PST

Thanks a lot. I bet that is the problem. We also live on a well and the water usually feels like it's barely 33 degrees. Renee
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