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Trees, Shrubs and Conifers: Catalpa "worms"...do they affect other trees?

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Forum: Trees, Shrubs and ConifersReplies: 7, Views: 59
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passiflora_pink

passiflora_pink
Shelby County, AL
(Zone 8a)

April 14, 2012
4:33 PM

Post #9082574

I have 2 catalpa trees that I planted about 6 years ago. I wanted some diversity in my yard and knew to expect caterpillars. I didn't really expect the complete defoliation that followed and am trying to decide whether to remove the trees while they are stilll small enough for me to do it. Can the caterpillars affect other trees? Are they beneficial?
ecrane3
Dublin, CA
(Zone 9a)

April 14, 2012
9:18 PM

Post #9082869

As far as I know it just likes Catalpa trees. If you like to fish, the worms make great bait but otherwise they're not especially desirable.
Here's some info:
http://www.ag.auburn.edu/enpl/bulletins/catalpasphinx/catalpasphinx.htm
http://www.clemson.edu/uhc/Gard.htm
http://www.walterreeves.com/gardening-q-and-a/catalpa-worm-control/

passiflora_pink

passiflora_pink
Shelby County, AL
(Zone 8a)

April 15, 2012
4:22 AM

Post #9082985

Interesting links...I have also been wondering whether the enormous number of caterpillars hosted by these trees has anything to do with the remarkable increase of yellow jacket nests in my yard the last couple of years. Last summer I had to be very cautious while digging, mowing or just walking around in shorts and got stung despite my wariness. If I could be attracting wasp colonies then I will remove the trees.
ecrane3
Dublin, CA
(Zone 9a)

April 15, 2012
9:42 AM

Post #9083285

Yellow jackets do eat caterpillars (among many other things) but I don't know if the increase in your yard is due to the Catalpa worms or if it's just a coincidence. If you'd like to keep the trees you could look into some methods of controlling the worms. I think a couple of the links I posted mentioned some means of control and if you search for controlling catalpa worms I'm sure you'll find a ton of information.

passiflora_pink

passiflora_pink
Shelby County, AL
(Zone 8a)

April 16, 2012
5:44 AM

Post #9084346

Thanks, Ecrane! You and others here a DG have given me a lot of insight on various topics over the years. I never fail to get help no matter what the problem is.

I will probably cull one of the trees. I think "controlling" the caterpillars year after year will be too labor intensive and costly. I will give the other one another year and then decide.

Resin

Resin
Northumberland
United Kingdom
(Zone 9a)

April 16, 2012
8:41 AM

Post #9084606

You could always invite local fishermen round to harvest them

Resin

passiflora_pink

passiflora_pink
Shelby County, AL
(Zone 8a)

April 17, 2012
11:04 AM

Post #9086274

Yes, I have heard that they are excellent for fishing!

Not that I want to open the door to hoards of sportsmen shaking/climbing/knocking my trees--I would have to take out some liability insurance--and expect the neighbors on my quiet street might complain.

Still I suppose in my old age I could shake the trees down each weekend and go to the farmer's market and sell catalpa worms as bait--I have been thinking of ways to make my plant habit pay!

Thumbnail by passiflora_pink
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JCalhoun
Saraland, AL
(Zone 8b)

April 19, 2012
2:21 PM

Post #9089229

Yep. Fish go bonkers for these worms.

The trees around here will usually only get half eaten as wasps, ants and birds almost annihilate the worms before folks can remove them.

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