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Los Angeles
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krystenr1
Sep 8, 2017 1:27 PM CST
How harmful are whiteflies on my tomatoes and bush beans? I don't have a total infestation, but have enough to be annoying.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 8, 2017 3:07 PM CST
Annoying today but ... Whiteflies will overwhelm your plants in just a few days. Try to contain them now before your plants start to suffer. Whiteflies suck the sap from new growth causing stunted growth, leaf yellowing and reduced yields. They introduce viruses into the tissue of plants, weaken the plants making them more susceptible to disease and secrete 'honeydew', a perfect place to grow sooty mold.

Try spraying with insecticidal soap (the real stuff, not something homemade). I am suggesting insecticidal soap because it works by damaging the outer layer of insect bodies, killing them in a few hours. Whiteflies build up immunity to pesticides very quickly but, because of the way insecticidal soap works, that won't happen.

If you see ladybugs or lacewings, the larvae will eat whiteflies. Don't bother to buy them from the nursery - the ladybugs and lacewings will not stay where you put them. You hopefully will attract some natives to do the job (if you do, don't use the insecticidal soap).

You can also blast your plants with water using a strong stream from a hose sprayer. Hang yellow sticky traps and shake the plants - the whiteflies will resettle on the traps (yellow is their favorite color). These two methods will have to be repeated at least a couple times each day.

Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
Los Angeles
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krystenr1
Sep 8, 2017 9:40 PM CST
Awesome, thanks so much. I'll do the insecticidal soap route!

How about neem oil or diotamaceous earth? I ask only because I have those on hand.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 8, 2017 10:26 PM CST
Make sure the diatomaceous earth is food grade. And then wash your vegetables really good before you eat them as you are essentially dusting your veggies with powdered glass. Wear an air mask with a good rating and eye protection - you don't want that in your lungs or eyes.

Neem oil will work - its an oil so, like the Insecticidal soap, if you manage to spray them, they will die. Its also safe for human consumption. Neem is a systemic but it takes a couple weeks to kick in. I think with the Neem or the Insecticidal soap, you will be spraying once a week and still not manage to kill all the whiteflies.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
Los Angeles
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krystenr1
Sep 9, 2017 9:13 AM CST
Could this leaf damage be the result of the fee whiteflies I currently have, or is this likely something else...?


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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 9, 2017 6:45 PM CST
Yes, it could be. When you shake the plants, do whiteflies fly up?
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
Los Angeles
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krystenr1
Sep 9, 2017 11:25 PM CST
Maybe three or so flies will fly up when I shake the leaves. I sprayed with neem oil today. Will check on them tomorrow.
Name: Anna Z.
Monroe, WI
Charter ATP Member Greenhouse Cat Lover Raises cows Region: Wisconsin
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AnnaZ
Sep 15, 2017 9:48 AM CST
I used baby shampoo or Dawn dish soap in my hose end sprayer in the greenhouse last winter. It didn't seem like I had nearly as many bugs. I think the "up" side of that is you can do it more often? I did it at least once a week or so after I had taken plants in.

And regarding whiteflies.............is it just MY lantana, or are they whitefly hotels??? They are just atrocious on the lantana, even during the summer.
Name: Karen
NM (Zone 7b)
Region: New Mexico Region: Arizona Greenhouse Cactus and Succulents Adeniums Sempervivums
Salvias Million Pollinator Garden Challenge Garden Art Plumerias Bookworm Hibiscus
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plantmanager
Sep 15, 2017 9:55 AM CST
I've had big whitefly problems on lantana, Anna. My tomatoes in the greenhouse always get attacked. I'll have to try the homemade soap solution.
Handcrafted Coastal Inspired Art SeaMosaics!
Name: Linda
Omaha, N.E (Zone 5b)
Always room to plant one more!
Cat Lover Birds Region: Nebraska Butterflies Hummingbirder Bookworm
Critters Allowed Garden Ideas: Level 1
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Freedombelle
Sep 17, 2017 2:03 PM CST
The d. earth, food grade, me and my husband and pets use to consume it because it is suppose to be good for you, we did for awhile but nowadays we consume chia seeds that have been soaked in water.....but my point is from tons of internet articles I read in the past people and animals can eat the d. earth is what I thought?
You can complain because roses have thorns, or you can rejoice because they have roses!
Name: Linda
Omaha, N.E (Zone 5b)
Always room to plant one more!
Cat Lover Birds Region: Nebraska Butterflies Hummingbirder Bookworm
Critters Allowed Garden Ideas: Level 1
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Freedombelle
Sep 17, 2017 2:07 PM CST
plantmanager said:I've had big whitefly problems on lantana, Anna. My tomatoes in the greenhouse always get attacked. I'll have to try the homemade soap solution.


Good to know, I had plans of planting Lantana next spring, now I know to be on the lookout. The only whiteflies I saw here in Omaha this season was none!, lots of aphids though.

You can complain because roses have thorns, or you can rejoice because they have roses!
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 17, 2017 6:59 PM CST
Hi Linda,

One of the things you learn if you wonder the Web for as long as I have is don't believe everything you read. Any crackpot can post anything AND once posted, it becomes fact and is picked up and repeated again and again until the real answer is lost somewhere in CyberSpace (socks are eaten by the same monster).

What I am trying to say is choose your 'experts' carefully. You should not purposely be eating diatomaceous earth. It is made up of fossilized diatoms (little tiny critters that lived in the ocean a really long time ago). The only thing left is their skeletons that are made of silica (Usually found as the major componant of sand or little those packets to keep your Cracker Jacks dry).

Luckily, eating diatomaceous earth doesn't seem to affect health. On the other hand, why take the chance? This was published by Oregon State University. I always believe universities and anything NASA tells me. Smiling

http://npic.orst.edu/factsheet...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
Name: Linda
Omaha, N.E (Zone 5b)
Always room to plant one more!
Cat Lover Birds Region: Nebraska Butterflies Hummingbirder Bookworm
Critters Allowed Garden Ideas: Level 1
Image
Freedombelle
Sep 17, 2017 7:47 PM CST
Daisyl, interesting read, we no longer consume it, nowadays our source of nutrition is chia seeds and quinoa seeds. I do get what you are saying about internet info, at the time my searches made it sound very beneficial to consume it in your beverages or food. I appreciate your input and the link provided and did read some of it. Thank You!
You can complain because roses have thorns, or you can rejoice because they have roses!
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Sep 17, 2017 8:21 PM CST
I hope you are pressure cooking your quinoa.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
Name: Linda
Omaha, N.E (Zone 5b)
Always room to plant one more!
Cat Lover Birds Region: Nebraska Butterflies Hummingbirder Bookworm
Critters Allowed Garden Ideas: Level 1
Image
Freedombelle
Sep 17, 2017 9:22 PM CST
DaisyI said:I hope you are pressure cooking your quinoa.


Just boil it for 20 minutes is what I do, do you mean use a pressure cooker?

You can complain because roses have thorns, or you can rejoice because they have roses!
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Sep 18, 2017 10:24 AM CST
Yes, pressure cooking removes saponins.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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