on my Cannas
kind of bugs could be eating my canna lilies and how do I get rid
of the problem? They are completly eating away the leaves.
actually seeing your plants it is difficult to say what is eating
the leaves of your canna lilies. There are three likely culprits
slugs, snails or caterpillars. Slugs and snails like to hide
in moist places during the day, and if you carefully examine around
the bases of your plants, you might find them there. Caterpillars
are more likely to be hidden under the leaves of your plants. They
could be camouflaged green or brown, and may be hidden under a webbing
of silk. There should also be evidence in the form of caterpillar
Getting rid of the problem
depends on your situation. If you have young children or pets (especially
dogs) you need to be careful with the use of slug and snail bait.
You can either put the bait into an open container that is hard
for a child or dog to get into, or buy some snail bait which is
non-toxic to pets. If you are very patient, you could remove the
slugs or snails by hand and leave them in the open for the birds
to eat. The caterpillars could also be removed by hand, but this
in practice may be hard to do. You could buy one of the garden sprays
available at garden centres or something like Derris dust. Remember
to read the label and take appropriate precautions.
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