Help! Beautiful Yellow Worms Devouring my Dill Plants

by Anna@Green Talk on August 26, 2009

bugs 2

I found these critters on my Dill plant this morning. They blended in with the plant seamlessly.  Note, the above  picture does not do this eating machine justice.  He (or she) is  bright yellow and green.  Very vivid.

What the dark green spot on my hand? Yes, that is poop from the worm. He pooped while I was holding him.

bugs

So, what happened with them?  I threw them in the bushes far, far away from my dill.  Note, the dill is right by my cabbage plant as a companion plant to deter cabbage loppers.  (BTW, the cabbage loopers were not dissuaded at all and ate some of my cabbage plant.)

These little buggers ate a lot of my dill plant.  Help.  What are these?


Similar Posts:

{ 10 comments… read them below or add one }

1 knutty knitter August 27, 2009 at 8:08 am

Those look really cute but I have no idea what they are. Perhaps you should let one or two hatch. Thats fun for the kids too. At the moment I have a cabbage white chrysalis on the back of my door and I left it there just for them to see. I have no idea if it will hatch but it is interesting.

viv in nz

Reply

2 jason August 27, 2009 at 10:26 am

I have had one of these guys munch at my herb garden….
They are the caterpillar from the black swallowtail butterfly.
http://bugguide.net/node/view/28632
.-= jason´s last blog ..How to evaluate CleanTech investment opportunities =-.

Reply

3 Debbie August 27, 2009 at 3:40 pm

Yes, those are indeed the caterpillars of the black swallowtail butterfly. Also known as parsley worms, these larvae feed on plants in the dill/carrot family, including also parsley, fennel, and even Queen Anne’s lace. You can read more about black swallowtails here: http://insects.about.com/od/butterfliesmoths/p/P_polyxenes.htm.

In my own garden, I’ve planted some dill and parsley in a butterfly area. When I find the caterpillars in my veggie/herb garden munching on the plants I want to harvest, I just collect them and move them to the host plants in the butterfly garden instead. That way, I still get to watch the caterpillars molt and pupate, and eventually become beautiful butterflies, without giving up my entire crop in the garden.
.-= Debbie´s last blog ..Bug of the Week – August 26, 2009 =-.

Reply

4 Green Talk August 28, 2009 at 10:27 pm

Thanks, Debbie. I found another one on the carrots! Anna

Reply

5 Hyla August 27, 2009 at 6:45 pm

If you want to deter them and other land locked insects, trying spreading used coffe grounds around the base of the plants. I know that slugs will not cross the grounds.

Reply

6 Green Talk August 28, 2009 at 10:27 pm

Hyla, good idea. I will try this next time since most the time I put the coffee in my composter. Worms love it.

Reply

7 CJStewart August 30, 2009 at 11:52 pm

Swallowtails are beautiful butterflies. We plant dill and rue specifically for them each year.

Reply

8 FED UP WITH THESE WORMS June 26, 2011 at 9:33 am

this is the first year i have ever encountered these pests. the worms are small but can they ever eat/destroy a dill plant. also, they stink. found a way to get rid of the stink – wear good garden gloves, then put them in a smmall can of gasoline. looks like they will wipe out this years dill

Reply

9 Valerie July 10, 2011 at 10:39 am

They only stink if threatened. It is their defense system- trying to smell like they won’t taste good. These are amazing creatures.

Reply

10 Anna@Green Talk July 13, 2011 at 10:13 pm

Valerie, found a ton of them this year on both my dill and fennel. They are beautiful. What does the butterfly look like? Anna

Reply

Leave a Comment

CommentLuv badge

{ 2 trackbacks }

Previous post:

Next post:

Green Talk® is a registered trademark of Green Talk LLC. All rights reserved. © 2007-2011 Green Talk LLC.
Google Analytics Alternative