
I am often asked to advise people on what to spray on their roses.
When I reply 'Why would you want to spray anything on your roses?',
I am regaled with horror stories about the number of pests and diseases
for which roses are renowned. In fact, roses are one of the most hardy
and easy care plants you can have!! If you have ever noticed an old
derelict house, chances are that there is an old rose bush or two
in the neglected garden which is still growing and blooming without
any intervention!!
In our gardens today, roses can be attacked by aphids - a situation
which is mostly due to the chemicals we use to kill all bugs including
predator bugs! If your roses have aphids on them, there are a few
tricks to make life easier for yourself, and for the roses. The first
is - try squashing them with your fingers. This is very effective
and also very satisfying! Also, you can wash them off with a jet of
water from the hose. Or you can throw some soapy water over the leaves
- this is effective for downy mildew also.
However, the best treatment is to encourage the predator bugs which
prey on aphids. These include ladybirds, hoverflies and lacewings.
Try planting some bright flowers like marigolds, to bring more predators
to your garden. Then just wait - the aphids will disappear within
days!
Another good remedy is to keep the plants healthy by giving them
a foliar spray with seaweed solution, and feeding the soil which the
plants grow in. A healthy plant is far more likely to withstand a
bug attack. Don't be tempted to reach for a chemical spray each time
you notice a bug on your plants - they may be one of the predator
bugs, and by killing them, you are making a lot of work for yourself.
Happy gardening,
Kathy