garden outdoors is just covered with whitefly. I have not a lot
of money to spend, so was wondering if you have any really cheap
ideas on how I can control it.
must admit that I spray nasty insecticides when I get whitefly,
but I chatted with the manager of our hortecology unit, Richard
Main, and asked him what he thought. He suggested that you could
try spraying with soapy water this can discourage whitefly
and other similar insects.
Otherwise you could try
to encourage beneficial insects, such as hoverflies, which will
attack the whitefly and keep their numbers in check. Hoverflies
are attracted by plants of the carrot family (Umbelliferae/Apiaceae),
such as carrot, dill, coriander, Queen Anne's lace, etc.
Richard did have one
last suggestion, which was to collect some whitefly and blend them
with water, and then spray the result on the plants to discourage
the rest of them. All I can say, is, don't use my blender...
by Dr Dan Blanchon from Unitec's Diploma in Sustainable Horticulture and Bachelor
of Resource Management.
with permission from NZOOM Home and Garden content,
from the previous
The views expressed here are not necessarily those of the RNZIH