From

Location

Message

Date Posted

Key West, FL

This was just brought up to me that sunflower roots may produce a substance that inhibits other root growth. Has anyone else heard of this? Thanks, Ben

6/22/2003 7:46:21 PM

North Ga

Probably my problem Ben. I have a bunch of sunflowers growing around my patch and I am bummed by the lack of AG growth.

6/22/2003 8:05:26 PM

Walton N.y.

yes, but if you grow them as a windbreak on the edge of your patch 3or more ft away from the pumpkin stump you should be fine

6/22/2003 8:05:37 PM

North Ga

My sunflowers look awesome though!! LOL

6/22/2003 8:06:12 PM

Key West, FL

I know pappy so do mine, mine are at about 3 feet, they are going anyway I geuss. Thanks for pointing this out to me Tom.

6/22/2003 8:36:01 PM

Key West, FL

wait, just went down there, about 4 feet now. Oh well.

6/22/2003 8:37:01 PM

Garden State Pumpkins

I always heard it was the seed shells that caused the problem....that's why you never see grass under a bird feeder...maybe it's the whole plant?...awful lot of people post pictures of them as windbreaks...guess they're farther off the patch.

6/22/2003 9:21:30 PM

Menomonie, WI ([email protected])

The word you are looking for is allelopathy. Do a search on on the web with sunflowers and allelopathy. You will find its both the hulls and the plants.

6/22/2003 9:55:23 PM

Mineral Virginia

Had a row of sunflowers within 4 feet of a row of pumpkins last year; didn't cause any trouble at all.

6/23/2003 2:08:49 PM

Montoursville, PA

Had two hues and a juniper finished or well established size. All three were grossly effected by the sunflower seed below the feeder I had established above or beside them. That was my first lesson. As to growing sunflowers I never noticed any significant retardent action from the presence of the plant.

6/23/2003 3:24:47 PM

Caceres, mid west of Spain

I don't think so men.
I have now 10 feet high giant sunflower in the upper garden and nice big watermelon plants, deliquata squash, cucumber and melons are growing fine just under them.

Don

6/24/2003 12:56:10 AM

Billerica,Massachusetts

This is true Sunflowers produce chemicals that hinder growth of other plants.

Glenn

6/24/2003 8:38:36 AM

Mineral Virginia

hate to be stubborn, but possible it is related to the sub-species of sun flower in question? I didn't post them to my diary last year, but I would be glad to provide pics of 6-8 sunflowers, about 25 in a row, nearly hanging over pumpkin plants. Plants showed no effects and did fine.

6/24/2003 9:17:30 AM

Appalachian Mtns.

Until this year I grew 10-12' tall sunflowers as windbreaks righ amongst the plants. Never noticed a problem with the plants that wasn't my fault.

6/24/2003 4:27:45 PM