Hornworm Moth

VC Scott · June 5, 2014

I never saw one of these before today. I think it is time to break out the BT. Anyone know how long it takes the eggs to hatch?

Hornworm Moth.jpg

ginger2778 · June 5, 2014

Depends on the temperature, but usually about 5 days. I don't think that is a sphinx moth,(hornworms are their larva), I think it is a tomato fruitworm moth, but the end result is the same, they both eat leaves and fruit, and BT is great stuff!

Marsha

heirloomtomaguy · June 6, 2014

Ahhh the foe of any gardener. Killed one in my garden last night.

luigiwu · June 6, 2014

Do you guys break out the BT when you see stuff or do you use it as part of a weekly alternating spray lineup like Serenade & milk spray?

VC Scott · June 6, 2014

I don't spray until I see leaves with holes, and only if my search for the offender is unsuccessful. I have found 4 hornworms already this year. I am going to spray this weekend because I know the moth was out there and BT is harmless to anything but the worms.

heirloomtomaguy · June 7, 2014

Usually i use spinosad as part of my scheduled spraying. But this year i am trying praying mantids. If i dont see close to total control i will break out the spinosad after all. The bummer is it will most likely kill the praying mantids.

PaulF · June 7, 2014

The sphinx moth is very interesting because it looks a lot like a hummingbird in flight. The hornworm is not so interesting when it begins to chow down. Luckily for here the worms are few enough and large enough that hand harvesting takes care of the problem.

RootLoops · June 7, 2014

mix a tablespoon of molasses in a gallon of water, spray wherever you don't want caterpillars and they won't touch it. you can add a tsp of dish soap to make it stick better and you have to apply it every four or five days or after a rain but they will not eat anything with molasses on it. last season i was picking 15-25 caterpillars off the first couple days and then after i started the molasses regimen i'd be lucky to find 3 or 4 and those weren't eating just crawling along stems. the molasses also doesn't affect the butterfly population like BT can if they are coinciding with the moth caterpillars. i do love me some BT though, it's great for the crawlies and mosquitoes/gnats i've got a bottle of concentrate on the way for soil drenching for the cucumber beetles. give it a shot, i didn't believe it would be so effective before i tried it

JJJessee · June 7, 2014

Quote:

Originally Posted by RootLoops

mix a tablespoon of molasses in a gallon of water, spray wherever you don't want caterpillars and they won't touch it. you can add a tsp of dish soap to make it stick better and you have to apply it every four or five days or after a rain but they will not eat anything with molasses on it. last season i was picking 15-25 caterpillars off the first couple days and then after i started the molasses regimen i'd be lucky to find 3 or 4 and those weren't eating just crawling along stems. the molasses also doesn't affect the butterfly population like BT can if they are coinciding with the moth caterpillars......

Sounds like a plan I can get behind, Thanks.

sparkie22 · June 13, 2014

First year tomato gardner! What is full name of BT and where can I buy it?
I found 2 hornworms tonight and I want to nip this in the bud ASAP!

Mojave · June 13, 2014

Quote:

Originally Posted by sparkie22

First year tomato gardner! What is full name of BT and where can I buy it?
I found 2 hornworms tonight and I want to nip this in the bud ASAP!

BT= Bacillus thuringiensis, a bacteria poisonous to caterpillars. I currently use Safer brand as that was all my local nursery had on hand. You should be able to find bT at most any good nursery.

http://www.saferbrand.com/store/garden-care/5163#desc

AprilMayJune · June 13, 2014

We had hornworms two years ago. They still haunt my dreams, hahaha. I actually was such a newbie I thought they were just GIGANTIC, crazy, benign caterpillars, here for a friendly visit, and "wow, let's get the camera!”

Then I noticed the missing leaves (why else did I think caterpillars would be on my plants?! I am an idiot, yes,) did a quick Google and....ugh. I'm just glad my husband was brave enough to dispose of them. Shudder.

That is my unhelpful contribution to this thread.

ginger2778 · June 13, 2014

Quote:

Originally Posted by AprilMayJune

We had hornworms two years ago. They still haunt my dreams, hahaha. I actually was such a newbie I thought they were just GIGANTIC, crazy, benign caterpillars, here for a friendly visit, and "wow, let's get the camera!”

Then I noticed the missing leaves (why else did I think caterpillars would be on my plants?! I am an idiot, yes,) did a quick Google and....ugh. I'm just glad my husband was brave enough to dispose of them. Shudder.

That is my unhelpful contribution to this thread.

I don't think you are an idiot at all. I had no idea what that cool looking extremely large green caterpillar was the first time I saw it either. That's what learning is all about. I liked the cute story, that is a nice contribution to the thread.

Marsha

sparkie22 · June 13, 2014

Thanks Mojave!

Wi-sunflower · June 14, 2014

In my 30+ years of gardening, I can count the number of Tomato Horn Worms I've seen on 1 hand. I don't know why, but we usually don't get them. And I've never seen the moth.

But last year we DID see several (maybe a dozen) of the Tobacco horn worm. Similar but not much of a horn and more brown than green. And I did see several of the Hummingbird moths in the fields. We squished them as we saw them. Weird as there are plenty of tomatoes in my area besides mine but Tobacco is about 100 miles away if grown at all around here.

We do use BT now and then for our cabbage and broccoli crops so maybe that keeps them down.

Carol

June 5, 2014	#1
VC Scott Tomatovillian™ Join Date: Dec 2011 Location: San Marcos, CA Posts: 352	Hornworm Moth I never saw one of these before today. I think it is time to break out the BT. Anyone know how long it takes the eggs to hatch? Hornworm Moth.jpg

June 6, 2014	#3
heirloomtomaguy Tomatovillian™ Join Date: May 2013 Location: glendora ca Posts: 2,560	Ahhh the foe of any gardener. Killed one in my garden last night. __________________ “Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it. Because narrow is the gate and difficult is the way which leads to life, and there are few who find it."

June 7, 2014	#6
heirloomtomaguy Tomatovillian™ Join Date: May 2013 Location: glendora ca Posts: 2,560	Usually i use spinosad as part of my scheduled spraying. But this year i am trying praying mantids. If i dont see close to total control i will break out the spinosad after all. The bummer is it will most likely kill the praying mantids. __________________ “Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it. Because narrow is the gate and difficult is the way which leads to life, and there are few who find it."

June 7, 2014	#7
PaulF Tomatovillian™ Join Date: Jan 2006 Location: Brownville, Ne Posts: 3,300	The sphinx moth is very interesting because it looks a lot like a hummingbird in flight. The hornworm is not so interesting when it begins to chow down. Luckily for here the worms are few enough and large enough that hand harvesting takes care of the problem. __________________ there's two things money can't buy; true love and home grown tomatoes.

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June 5, 2014	#2
ginger2778 Tomatovillian™ Join Date: Aug 2011 Location: Plantation, Florida zone 10 Posts: 9,283	Depends on the temperature, but usually about 5 days. I don't think that is a sphinx moth,(hornworms are their larva), I think it is a tomato fruitworm moth, but the end result is the same, they both eat leaves and fruit, and BT is great stuff! Marsha

June 6, 2014	#4
luigiwu Tomatovillian™ Join Date: Jun 2013 Location: ny Posts: 1,219	Do you guys break out the BT when you see stuff or do you use it as part of a weekly alternating spray lineup like Serenade & milk spray?

June 7, 2014	#8
RootLoops Tomatovillian™ Join Date: Feb 2014 Location: rienzi, ms Posts: 470	mix a tablespoon of molasses in a gallon of water, spray wherever you don't want caterpillars and they won't touch it. you can add a tsp of dish soap to make it stick better and you have to apply it every four or five days or after a rain but they will not eat anything with molasses on it. last season i was picking 15-25 caterpillars off the first couple days and then after i started the molasses regimen i'd be lucky to find 3 or 4 and those weren't eating just crawling along stems. the molasses also doesn't affect the butterfly population like BT can if they are coinciding with the moth caterpillars. i do love me some BT though, it's great for the crawlies and mosquitoes/gnats i've got a bottle of concentrate on the way for soil drenching for the cucumber beetles. give it a shot, i didn't believe it would be so effective before i tried it

June 13, 2014	#10
sparkie22 Tomatovillian™ Join Date: Jun 2014 Location: Fair Oaks, California Posts: 15	First year tomato gardner! What is full name of BT and where can I buy it? I found 2 hornworms tonight and I want to nip this in the bud ASAP!

June 13, 2014	#12
AprilMayJune Tomatovillian™ Join Date: Dec 2012 Location: Zone 5 Posts: 63	We had hornworms two years ago. They still haunt my dreams, hahaha. I actually was such a newbie I thought they were just GIGANTIC, crazy, benign caterpillars, here for a friendly visit, and "wow, let's get the camera!” Then I noticed the missing leaves (why else did I think caterpillars would be on my plants?! I am an idiot, yes,) did a quick Google and....ugh. I'm just glad my husband was brave enough to dispose of them. Shudder. That is my unhelpful contribution to this thread.

June 14, 2014	#15
Wi-sunflower Tomatovillian™ Join Date: Nov 2008 Location: Wisconsin Posts: 2,591	In my 30+ years of gardening, I can count the number of Tomato Horn Worms I've seen on 1 hand. I don't know why, but we usually don't get them. And I've never seen the moth. But last year we DID see several (maybe a dozen) of the Tobacco horn worm. Similar but not much of a horn and more brown than green. And I did see several of the Hummingbird moths in the fields. We squished them as we saw them. Weird as there are plenty of tomatoes in my area besides mine but Tobacco is about 100 miles away if grown at all around here. We do use BT now and then for our cabbage and broccoli crops so maybe that keeps them down. Carol