Return to the Gardening in Canada Forum | Post a Follow-Up

 o
My rosemallow is dying, help

Posted by grassnut100 5b (My Page) on
Wed, Sep 2, 09 at 23:47

Has anyone ever experienced rosemallow (dinner plate hibiscus) slowing dying after growing very healthy stems, leaves and buds?

I have 3 well established (3 years plus) rosemallow plants in various locations in the garden. This particular one started coming back in late June, healthy strong stems that grew to 4 feet, and HUNDREDS of buds. I was so excited until 3 weeks ago when the flowers started to bloom, part of the plant started to wilt. The buds did not open, leaves turned yellow and then brown. I saw some tiny green caterpillars on some leaves, sprayed but that did not work. (my other 2 plants also have some caterpillars but they are thriving)
I think the root system is also fine because I still see some tiny stems trying to shoot up from the ground.
It also does not look like it is lacking in water. Afterall it has been wet in Toronto this summer. My other plants around it are fine.

It is a mystery.

Can anyone provide some suggestions? I don't think I can save this one but hope to try and prevent it from happening again.

HELP and THANKS


Follow-Up Postings:

 o
RE: My rosemallow is dying, help

I know you mentioned the roots being fine but I still suspect it's in the roots. We have had so much rain in Ontario that blight and other fungi have proliferated. I have noted the same affliction on my shasta daisy, echinacea and blue thistle - where the entire stem suddenly wilts and dies off and yet new growth does prop up from the roots. I had dug up one plant and noted that rot has invaded a part of the roots which explained the wilt. I think you should begin treating it for root rot and I would suggest that you go to your nearest established garden centre to seek advise on what best to do.

Caterpillars were probably a secondary symptom. The primary one is the one that caused the plant distress and once that happens other diseases will prop up.


 o
RE: My rosemallow is dying, help

Thanks for the insight. I'll dig into the soil and check it out.
I also planted some new echinacea and blue globe thistle a few weeks ago, hopefully they will survive.


 o
RE: My rosemallow is dying, help

I grow Hardy Hibiscus for years and have many of them as they are my favorites.I lost two of them from root rot.Your description indicates root rot,so I agree with ianna,I advice to examine stems,as they cam be bent or even broken from strong wind.As a first aid spreading sulpher powder on the soil at the base of steams can help.
We can also blame rodens like moles woles,They damage roots as they travel underground.And as ianna says turning to garden centre with the prblem can be very helpful.
Hope,your Hibiscus will recover soon.
Hala.


 o
RE: My rosemallow is dying, help

Thanks for the info. Hala. We do have critters as well, and I won't be surprised if they also damaged the roots.


 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 Gardening in Canada 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.
  • 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