Return to the Dahlia Forum | Post a Follow-Up

Leaves drying up

Posted by homemommy 6a (My Page) on
Tue, Apr 7, 09 at 10:55

On several of my plants, (the tubers where potted up in January) the bottom leaves are drying up and becoming crisp (decidedly dead). Then, the next most bottom leaves are suffering from the same dreaded fate, and so on, like a chain reaction.

what is causing this? I believe the mother plants from last year had white powder mildew, but they show no other signs of this right now. (No powder, nice bright green leaves). I thought perhaps spider mites, but it has been many weeks with this condition, and I can`t see the mites, no leave damage on top, no webs with very careful inspection.

Could it be overwatering?

The leaves seem to turn very quickly, otherwise they look very healthy up until they become affected!!

Follow-Up Postings:

RE: Leaves drying up

Hmmm... I may have found my answer... a Nitrogen deficiency... I will have to experiment with a few plants and see if they recover...

Leaves drying up (followup)

Ok, I am clueless, and I don`t think it is Nitrogen... I found a few leaves that are starting to turn, they have a large yellow patch and have very small brown spots, to me, they look like they are bruised... but I don`t think that is what it is...

RE: Leaves drying up

My first thought was overwatering, but, mine, which are being rooted hydroponically, are beginning to show similar signs. I looked in Bill McClaren's book and it sounds like it might be a fungal disease. You could try 5T. Baking Soda to 1 gallon of water. Plantlady recommended Garden Safe Fungicide3 (includes fungicide, miticide and insecticide) in a recent post regarding fungal disease. Cut off and discard the infected parts. They may look "rough" for a few days, but should rebound.

RE: Leaves drying up

Thanks Monet for the reply.

They seemed to stabalize over the last couple days, in the end I decided to do nothing, including not water them any further. I think it really is the watering. However... I had to go away for the weekend and leave my plant babies! So I had to water many of them that did not need it yet, because I did not think they would hold over 4-5 days! I am sick with what they will look like when I get home!

I am going to try the baking soda idea, and see if I can find that Fungicide product around here...

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Dahlia Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here