I have a single Brussel sprout bush. It got attacked
with bazillions of aphids last week. The aphids, in turn,
got attacked by me with organic Chrysanthemum. They are
all still hanging there dead. Nothing is moving.
Question: what do do with the damaged leaves? Cut
them off? Leave them be?
the riddle wrapped in an enigma wrapped
The leaves look like hell, but the still have the same color
as the rest of the plant. The dead aphids are still stuck
in the plant were they died. Plugging their holes, I presume.
the riddle wrapped in an enigma wrapped
In many cases there are no eggs, depending on species and the part of their
life cycle aphids frequently reproduce viviparously, that is they give birth
to live nymphs. They can reproduce at prodigous rates in good conditions so
regular inspection and attention is a must, in a few days they can get away
from you again. As others have said hose them off or if you cannot get them
off use a fairly benign contact spray like pyrethrum but when bees are not
active (eg after sundown).
i had a mutant cabbage plant this year that
wasn't cabbage, but some other leaved green.
stems tasted like edible stuff, but it sure
wasn't a cabbage as intended.
the plant grew rather well and i was curious
as to what it would turn out to be, but as it
got bigger aphids started in on it too. at
first i picked off those leaves i could find,
but the past few weeks i've been busy or ill and
couldn't pick leaves.
the other day checking the cabbages i noticed
that the entire plant was covered in aphids and
the surrounding ground was coated with aphid
dander (and whatever is left when lady beetles
get done with them). the lady beetles were trying
their best to keep up, but it was impossible. all
the aphids in the leaves would get the leaves to
curl and the lady beetles couldn't get in there
to eat them.
so i took the entire plant out and relocated
it to the far weed pile of no return. it was
rather icky trying to get the plant out as the
aphids were sticky and falling off all on my
arm enough that they just smeared all over.
ended up having to cut it out one branch and root
at a time. when done i hosed off in nice sun
the aphids were light green to gray coloured.
then i hosed the surrounding plants off to make
sure any aphids off and away would have more of
a challenge. this plant was growing in contact
with both edamame soybean plants and other bean
plants. no aphids took up residence elsewhere
that i can tell. none to be found.
quite amazing that a specialized aphid like this
could exist, manage to find the one plant in the
yard. it didn't touch the neighboring cabbage
plants and i've not seen it elsewhere.
The white 'dander' is the cases of aphids after they have outgrown them.
They go through several stages of growth leaving their shells behind them.
I have pictures if you (or anybody) are interested.
Number 3 shows the shells (white) and live bugs (green) on a rose hip.
2. is one individual on a rose stem, here you can see why a rose stem feels
rough, it isn't thorns but little red knobs that are beyond the sight of
What did you do, beat them with the organic chrysantemum? How do
you know that it was an organic flower? Poor flower; what did it look
like when you were through? Are you really just trolling? At any rate,
if the leaves are still green, though deformed, leave them. Next time
you see aphids, remember that a simple water spray is all it takes to
"control" them; I use a "Hudson" type pneumatic sprayer. Contrary to
myth, aphids so abused do _not_ climb back up and re-infest the plants
because their "mouth" parts have been ripped out of their cute little
Oh, I was just kidding. I just figured you were referring to
pyrethrum. Not really necessary for aphids unless, of course, unusual
circumstances require it. The best defense against aphids is to keep
plants healthy, thriving and well-watered. They seem to more readily
attack plants that are already under stress or are nearing the end of
their life cycles. My experiences with Brussels sprouts were a lot like
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