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When I cut flowers (typically daylilies) from my garden and bring them inside, I often find I am treated to a barrage of flies over the next few days. I'm going to guess that there are maggot larvae within the flowers, which matures inside my home.

I'd also like to bring in my peonies, but they are covered in ants. If a different technique is applicable for them, I'd like to know.

I love the idea of bringing my garden inside, but not at the expense of harboring an indoor insect colony. Is there a way to kill the insects/larvae (with or preferably without chemicals?)

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up vote 14 down vote accepted

Inspect your flowers before bringing them inside; if you see insects on them, give them a gentle shake or dislodge the critters by hand with something like a small, soft paintbrush. Another option is to cut the flowers in the early morning and let them sit in a bucket of water outside in the shade for a few hours before bringing them inside; the insects will often leave on their own. I've been bringing cut flowers in for years and find this usually works just fine. I wouldn't go to the effort of killing insects that are there naturally.

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I assume you mean to soak them upside down in a bucket so the flower heads are submerged in water? –  glenviewjeff Jun 29 '12 at 19:16
    
I tried the soaking in a bucket technique this year with peonies and for the most part it seems to have worked. I don't know how many insects were there to start with but I only noticed one or two insects at the end. One issue I had was that the bucket wasn't deep enough to fully submerge all of the stem, and also that the flowers were a bit buoyant. –  glenviewjeff Jul 2 '13 at 15:33
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  1. chemically, you may use a spray containing malathion @ 1% with a sticker-spreader. it is a relatively safe pesticide.
  2. organically, neem (azadiracta ) emulsion @ 2% you may use with a sticker-spreader.

both are safe on flowers. spray during a mild weather when the plant is not under any stress.

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