Ask a Question forum: Cosmos plant

Views: 329, Replies: 4 » Jump to the end
Name: Erika
San Diego (Zone 1a)
Mar 13, 2016 12:55 PM CST
Hello everyone, I am a new to gardening. I planted a few cosmos and one of them looks like it might canker disease or it could be something else. I've read up to terminate the plant ASAP. But the damage is only on the flower not on the stems nor at the root. Any suggestions as to what I can do?I have 3 Cosmo plant planted on the same pot. Should I also remove all of them if the flower is infected?
Thumb of 2016-03-13/Beefriendly/27986a

Name: Carole
Clarksville, TN (Zone 6b)
Charter ATP Member Garden Sages Plant Identifier I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar
Garden Ideas: Master Level Celebrating Gardening: 2015 Cat Lover Birds Lover of wildlife (Raccoon badge) Avid Green Pages Reviewer
Mar 13, 2016 2:53 PM CST
Hi Erika. Canker can attack your Cosmos once the flowers have bloomed, but it causes dark brown scab-like formations on the stems rather than on the blooms.
I garden for the pollinators.
central Illinois
Charter ATP Member Plant Database Moderator I was one of the first 300 contributors to the plant database! Hosted a Not-A-Raffle-Raffle Million Pollinator Garden Challenge Plant Identifier
Garden Ideas: Level 2 Celebrating Gardening: 2015 Avid Green Pages Reviewer Photo Contest Winner: 2014 Photo Contest Winner: 2017
Mar 13, 2016 2:55 PM CST
Welcome to the site.
Nothing that's been done can ever be changed.
Name: Debra
Garland, TX (NE Dallas suburb) (Zone 8a)
Service dogs: Angels with paws.
Dragonflies Dog Lover Bookworm I was one of the first 300 contributors to the plant database! Garden Photography Bee Lover
Plays in the sandbox Butterflies Region: Texas Garden Sages I sent a postcard to Randy! Charter ATP Member
Mar 13, 2016 3:02 PM CST
Welcome, Erika. Smiling
Welcome! Welcome! Welcome!

I have seen something similar on flowers during periods of drought, but don't know what is causing that on your Cosmos.
It’s okay to not know all the answers.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Mar 13, 2016 7:11 PM CST
If it's only on the flowers, it's probably sunburn or windburn. Don't worry about it.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost


« Homepage
« Back to the top
« Forums List
« Ask a Question forum
Only the members of the Members group may reply to this thread.

Member Login:



[ Join now ]

Today's site banner is by rocklady and is called "NOID Daylily"