2012年8月14日星期二
Pest control for perennials
Perennials are a great choice
for any garden, with their great variety of colors, shapes and sizes. Perennials also have another important
advantage over other types of flowers.
That is, unlike annuals, which must be replanted year after year,
perennials, by their very nature, are able to regenerate from year to
year. This means you are free to plant
once and enjoy many seasons of beautiful blooms.
While the actual longevity of
perennials varies from variety to variety, some types, such as peonies, have
been known to last for decades once planted.
This longevity, however, can
come at a price, and one of those disadvantages is that perennials need more
care when it comes to maintenance, weeding and pest control. Unlike the annual garden, which is dug up and
restarted each year, perennials remain in the ground over the winter, and this
can make them more prone to common garden pests than other types of plants.
One of the best defenses against
pests in the perennial garden is a healthy and vigorous selection of
plants. The healthier the plants in the
garden the better they will be at fighting off common pests and garden
infections. Plants that are well cared
for and vigorous will be much less susceptible to damage by insects and other
pests.
The vigilance of the gardener is
another great tool in preventing pest infestations from getting out of
control. A good gardener is constantly
on the lookout for early signs of problems, such as holes in the leaves, marks
or wounds on the stems, and other signs of pest problems.
Having a good guide to common
garden pests and diseases is a good idea as well, since it can sometimes be
difficult for the untrained eye to tell exactly what the problem is. Diagnosing the problem is the best way to
cure it quickly, before it can spread.
Gardeners have a choice when it
comes to pest control in their gardens.
There are of course a great many chemical pesticides on the market, but
there are a number of natural methods as well. Many experienced gardeners
prefer to start out with the natural approach first, and move onto chemical
methods only when natural attempts have failed.
One great natural pest control
approach is to use beneficial insects to control harmful pests. Many garden supply stores sell these
beneficial insects, and it is usually easy to seed a garden with these insects
and get them to stay and remove harmful pests.
In addition, aphids can often be
controlled simply by spraying plants with a very dilute mixture of soapy water,
followed by a rinse of clean water. This
method often works just as well, and is considerably less expensive, than
chemical methods, and it has proven effective even on serious aphid
infestations.
Another great way to control
pests is to buy pest and disease resistant varieties of plants. Many perennials have been selectively bred to
be resistant to common pests and diseases.
If these varieties are available it is a good idea to seek them
out. Even if they are more costly up
front, the money you save on pesticides and other chemicals can make them quite
cost effective.
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