Ask a Question forum: Yellowing leaves, sick sunflowers

Views: 335, Replies: 9 » Jump to the end
North Carolina
Image
RosemaryOs
Aug 1, 2017 5:43 AM CST
This is my first time to plant sunflowers. From the very beginning, something was eating the leaves. Ag director said caterpillars, but I don't think so. Now, some of the plants are going yellow and limp. I have babied these plants with food and water.

I realize they don't have much room in the canna garden but it was the only spot that was tilled in our community living arrangement.

I love sunflowers.

Any advice appreciated. FYI, It looks like I am going to get some blooms may be. These plants took much more than 60 days to get this tall without any blooms.

Thanks
The plants on the right side of the photo are the worst looking.
Thumb of 2017-08-01/RosemaryOs/db18ac


Thumb of 2017-08-01/RosemaryOs/b2b40a

[Last edited by RosemaryOs - Aug 1, 2017 5:45 AM (+)]
Give a thumbs up | Quote | Post #1517192 (1)
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Aug 1, 2017 4:54 PM CST
Something is eating leaves. Look out for them. It could be something at nite.

Sunflowers.take longer than 60 days to blossom.
😎😎😎
Anything i say, could be misrepresented, or wrong.
North Carolina
Image
RosemaryOs
Aug 2, 2017 5:30 AM CST
Thank you, Philipwonel for your timely reply.

Timely, because this morning I spied this ugly bug attached to the stem of my sickest sunflower. This is the first time since planting that I have actually seen a bug on my plants.
I wonder if this must be my culprit? I have no idea what this bug is.
Any help or recognition is appreciated.

The ugly bug is getting healthy on my sunflower plants.

Sunflower plants had better bloom soon or they will be too weak.
Thumb of 2017-08-02/RosemaryOs/25b6be

Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Aug 2, 2017 6:16 AM CST
It looks like somekind of sucking bug. Spray with Pyrethrin.
Bug is very dark in pic.
Check out bug ID in our library.
Go to learning library. Then to pest control library.
😎😎😎
Anything i say, could be misrepresented, or wrong.
North Carolina
Image
RosemaryOs
Aug 2, 2017 6:16 AM CST
Thanks, Phhipwonel. I am a newbie so did not know about bug library. Useful information.

I believe that is a case around the bug.
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Aug 2, 2017 6:41 AM CST
Rolling on the floor laughing Thats a good one. A case around bug. Thats right. That hard shell, is like a case around bug. It makes them hard to kill. Then they suck, not chew, making manners worse.
I've also heard neem oil is systemic. That may help better. Drench soil with some neem water mix. Or spray plants.
After useing pyrethrin to knockdown.
😎😎😎Philip
Anything i say, could be misrepresented, or wrong.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
Aug 2, 2017 10:10 AM CST
Welcome!

The bug looks like a beetle, it's a bit hard to make out its markings but does it look like this (green june beetle)?

http://entoweb.okstate.edu/ddd...

If so they have chewing rather than sucking mouthparts. If that's not it, can you try and get another picture that shows more detail of the insect? I'm not sure that it is your problem, though. Are the sunflowers in full sun, they look a little spindly?
Name: Elaine
Sarasota, Fl
The one constant in life is change
Cat Lover Master Gardener: Florida Tropicals Multi-Region Gardener Vegetable Grower Region: Florida
Herbs Orchids Birds Garden Ideas: Level 2 Garden Sages Celebrating Gardening: 2015
Image
dyzzypyxxy
Aug 2, 2017 10:17 AM CST
Hi and welcome. I think they're not in enough sun as well. Also they're competing in that bed with Cannas and that's not good for any plant, as the Cannas will suck up every bit of water and fertilizer, and spread around by underground rhizomes to choke out other plants.

Lack of sun and competition explains why they've taken so long to get big enough to bloom. Next summer, try growing a smaller variety in a really big pot, and put it in the full, direct sun. Bugs love to feed on plants that are in distress, too.
Elaine

"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill
North Carolina
Image
RosemaryOs
Aug 2, 2017 11:42 AM CST
Thank you all so much.

A friend confirmed the ugly bug as a June bug beetle.

Neem Oil is an Awesome idea!!!

I believe next year I will find a separate space in the full sun for sunflowers.

Cannas are thriving but indeed competitive.

Thanks to all! I tip my hat to you.
Name: Yardenman
Maryland (Zone 7a)
Image
Yardenman
Aug 3, 2017 2:20 AM CST
RosemaryOs said:Thank you all so much.

A friend confirmed the ugly bug as a June bug beetle.

Neem Oil is an Awesome idea!!!

I believe next year I will find a separate space in the full sun for sunflowers.

Cannas are thriving but indeed competitive.

Thanks to all! I tip my hat to you.


That sure looks like a June Bug. Hand picking is best if there are just a few. Soapy water can kill them and other harmful beetles. A sunnier spot will help plants stay healthier to resist their damage.

« Garden.org 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:

Username:

Password:

[ Join now ]

Today's site banner is by fiwit and is called "Still Gazing at Stars"