Ask a Question forum: Watering outdoor houseplants

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Pa
Butterflies Daylilies Echinacea Heucheras Hellebores Hostas
Lilies Region: Northeast US
bluepoppy
Sep 15, 2017 8:27 AM CST
Want to water to kill the bugs before bringing inside. Read where some use hydrogen peroxide and others ammonia. What is the best to use?
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
Sep 15, 2017 8:55 AM CST
I use Insecticidal Soap. I water my plants with it and also spray the foliage a couple times before I bring them in.
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Pa
Butterflies Daylilies Echinacea Heucheras Hellebores Hostas
Lilies Region: Northeast US
bluepoppy
Sep 15, 2017 9:00 AM CST
what ratio do you use to water?
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 15, 2017 9:02 AM CST
Same as for mixing spray. I think its 1/3 cup per gallon of water.
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

Webmaster: osnnv.org
Name: Will Creed
NYC
Professional indoor plant consultan
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WillC
Sep 15, 2017 11:03 AM CST
I have never found dosing the soil with peroxide or insecticidal soap to be an effective way to treat soil-born insects. Concentrated ammonia will probably kill the plant.

If you leave a plant sitting in a tub of water for a couple of hours, that may drive the insects from the soil as they search for oxygen. But that only works on certain insects.

If insects are a problem for your house plants, you might want to reconsider moving them outside in the warmer months.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
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Name: Karen
NM (Zone 7b)
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plantmanager
Sep 15, 2017 11:07 AM CST
I think Will is right. I used to move plants outdoors but it was such a hard job that they now stay indoors all summer and do just fine. When I used to move them in and out, I'd re-pot with fresh soil before bringing them in. Just spraying and such didn't get all the insects out.
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purpleinopp
Sep 22, 2017 1:31 PM CST
What bugs do these plants have?
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