We hope you have enjoyed the SRGC Forum. You can make a Paypal donation to the SRGC by clicking the above button

Author Topic: Problems with Caltha species  (Read 2211 times)

Gerdk

  • grower of sweet violets
  • Hero Member
  • *****
  • Posts: 2928
Problems with Caltha species
« on: August 05, 2007, 11:48:20 AM »
After a normal and healthy growth in spring and early summer the leaves of my Caltha species (C. palustris alba, C. polypetala, C. sagittata) started to show the symptoms as demonstrated by the attached pictures.
I suspect this is a physological disorder caused by the sun but I am not sure.
Are there some other growers which have the same problem?
Unfortunately (in this case) my small garden is surrounded by a wall, so there is not much air circulation during hot spells.

Gerd Knoche, Solingen
Germany
Gerd Knoche, Solingen
Germany

Susan Band

  • Hero Member
  • *****
  • Posts: 842
  • Country: 00
    • Pitcairn Alpines
Re: Problems with Caltha species
« Reply #1 on: August 05, 2007, 01:51:44 PM »
Have you been having it really hot? If so I would check for red spider. Otherwise it is probabally what you said just sunburn.
Susan Band, Pitcairn Alpines, ,PERTH. Scotland


Susan's website:
http://www.pitcairnalpines.co.uk

Gerdk

  • grower of sweet violets
  • Hero Member
  • *****
  • Posts: 2928
Re: Problems with Caltha species
« Reply #2 on: August 06, 2007, 07:47:25 AM »
Susan,
Thank you. This morning I checked for spider mites. There are no signs of an infestation. So I agree, the damage most probably was caused by the sun.
Gerd Knoche, Solingen
Germany
Gerd Knoche, Solingen
Germany

 


Scottish Rock Garden Club is a Charity registered with Scottish Charity Regulator (OSCR): SC000942
SimplePortal 2.3.5 © 2008-2012, SimplePortal