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How to Keep The Good Bugs
In Your Garden
Learn
from Arlene Wright-Correll - first find out which are
the good bugs..
All of us who garden and who are
eco-conscious try to figure out ways to eliminate the "bad"
bugs in our gardens. Those slugs and bugs who not only eat
up our flowers and veggies, but just give us the "creepy
crawlers" when we see them!
Gone are the days of DDT and many other chemicals we used
way back when we did not know any better. We must remember
that even today, pesticides not only kill the "bad" bugs,
but the "good" bugs also.
We can buy "good" bugs for our gardens or we can invite them
into our gardens by growing plants that attract "good" bugs
and let them eat the "bad" bugs. Companies sell beetles that
are in hibernation; when they wake up in your garden,
they're not likely to stick around. The first response of
any hibernating creature when it wakes up is to disperse, so
the beetles fly away rather than staying in your backyard.
So it makes more sense to me to grow plants that attract the
bugs and beetles you want.
Some of the "good" bugs are as follows:
Lady Bugs
A favorite "good bug," ladybugs will eat aphids, mealy bugs,
scale, leafhoppers and other soft bodied pests. They keep on
eating until the bad bugs are gone, laying their own eggs in
the process. When new pests arrive, fresh ladybugs will be
waiting. These lovable little bugs really do work for you,
plus they will be doing something favorable for the
environment. Note: Release at sundown (because they don't
fly at night).
As we know the most commonly recognized beneficial insect is
the ladybug or lady beetle, but did you know that there are
actually several slightly different types of ladybeetles?
Two very common types are the Convergent ladybeetle with 12
black spots and the Seven-spotted ladybeetle. Both are very
similar in appearance with black heads, orange bodies and
black spots.
Another common species is the Twelve-spotted ladybeetle.
This insect is pinkish-red in color with 12 black spots and
more oval or elongated in shape compared to other
ladybeetles. As we have stated all these ladybeetles, both
adults and larvae, are predators of soft-bodied insects like
aphids, mealybugs, scale and also eat egg masses of other
types of insects.
Ladybeetle larvae are very different in appearance than the
adult beetle, and most people when looking at the larvae
have no idea that it is a baby ladybeetle. The larvae look
like very small, flat, slim, black alligators with orange
spots and are about " long. Aphids are a preferred food
source for ladybeetle larvae, and they are voracious
predators eating even more harmful insects that the adult
beetles do.
Gardeners sometimes think these purple, dragon-like critters
with spines/warts and big legs are pests, but if they're in
your garden, they're helping you out.
People may think these are causing damage to the plant when
in reality they are destroying the aphid population. The
worst thing you could do is go out and spray the larvae.
Syrphid Flies
These flies are called by several names, such as flower
flies or hover flies. Most are brightly colored, yellow or
orange and black, and may resemble bees or yellow jacket
wasps. However, syrphid flies are harmless to people.
Usually they can be seen feeding on flowers. It is the
larval stage of the syrphid fly that preys on insects.
Variously colored, the tapered maggots crawl over foliage
and can eat dozens of small, soft-bodied insects each day.
Syrphid flies are particularly important in controlling
aphid infestations early in the season when cooler
temperatures may inhibit other predators.
Similar in appearance to syrphid fly larvae is a small,
bright orange predatory midge ( Aphidoletes). These
insects often can be seen feeding within aphid colonies late
in the season.
Praying Mantis
Praying Mantis are ferocious looking creatures eat a wide
variety of insects: beetles, caterpillars, grubs, aphids,
grasshoppers, yes almost anything that moves, and yes, the
females even eat the males after mating! They are so much
fun that people often buy them as pets. They don't fly; they
stay right where they are released. The name is derived from
the "prayer-like" pose that they remain in as they are
preparing to strike. Like Ladybugs, Praying Mantis is
completely harmless to people, pets, and the environment.
They are purchased as egg casings which are set in shrubs
around the garden. Hatching takes about 2 weeks, after which
the Mantis will begin to consume insects. Unfortunately they
will also eat some beneficial insects (not ladybugs
though) if sufficient pest bugs are not available.
Praying mantis tends to be a curious and friendly bug, which
may end up keeping you company as you work in the garden.
Predator mites
Predator mites are very useful in controlling spider mites
and two spotted mites, both indoors and in the garden. They
are purchased as adults which will eat 1-3 adult mites or up
to 6 mite eggs each day.
Spined Soldier Bug
Another beneficial insect popping up in many area gardens is
the Soldier beetle, also called the Pennsylvania
Leather-wing. This beetle is about " long, with an elongated
body, golden or yellowish-brown in color and has black
markings on the legs, head, and underside and rear abdomen
section. The adults feed on pollen, flower nectar and other
small insects while the larva feed on small caterpillars,
grasshopper eggs and other beetles. Their eggs are laid in
the soil and the whitish, flattened and hairy larvae feed at
the surface of the soil. There are two generations of
Soldier beetle per season.
Spined Soldier Bug is often called " stink bugs".
They are normally purchased as a combination of nymphs and
adults. Because they are generally only effective for a
month or so, it is sometimes necessary to release additional
predators if the adult population has diminished or if
subsequent plantings are desired.
Hunting Wasps
A large number of wasps from several families prey on insect
pests. Many take their prey, whole or in pieces, back to
their mud, soil or paper nests to feed to the immature
wasps. These hunting wasps can be important in controlling
Garden insect pests. For example, the common Polistes
paper wasps, when hunting, may thoroughly search plants and
feed on caterpillars, often providing substantial control of
these insects.
Spiders
All spiders feed on insects or other small arthropods. Most
people are familiar with many common web-making species.
However, there are many other spiders-wolf spiders, crab
spiders, jumping spiders-that do not build webs but instead
move about and hunt their prey on soil or plants. These less
conspicuous spiders can be important in controlling insect
pests such as beetles, caterpillars, leaf hoppers and
aphids.
Trichogramma wasps
Trichogramma wasps are tiny wasps which prey on the eggs of
more than 200
worm type pests, including borers, webworms,
and many types of moth caterpillars. The wasps lay their
eggs directly into the pest's eggs, killing the eggs as they
hatch. As soon as the wasps mature, they will fly off in
search of new eggs to parasitize. Different species of
Trichogramma wasps are more effective against certain pests,
so purchase eggs appropriate for the pests which have
invaded your garden.
Green Lacewings
The Green Lacewing is a common insect in much of North
America . Adults feed only on nectar, pollen and aphid
honeydew, but their larvae are active predators. They will
attack and destroy several species of aphids, spider mites,
thrips, whiteflies, eggs of leafhoppers, moths, leafminers,
small caterpillars, beetle larvae and the tobacco budworm.
They will also eat the long-tailed mealybug often found in
greenhouses and interior plantscapes.
These eggs are shipped in a medium of rice hulls to
facilitate ease of spreading. The 1,000 eggs are so small
that they would easily fit inside something as small as half
a pea! But upon hatching they have voracious appetites,
consuming up to 1,000 aphids a day! Adults will lay eggs and
the cycle will perenniate in your garden for years.
This insect is normally purchased in the egg stage, and
allowed to hatch out in the proximity of an insect problem.
The larvae will feed for only 2 or 3 weeks before becoming
adults, at which time it may become necessary to introduce
additional larvae to your garden rather than relying on the
reproduction habits of your adults. Lacewings are most
effective when a large number of the larvae are introduced
into a limited area.
Beneficial Nematodes
These microscopic insects will seek out and destroy over
200 kinds of soil dwelling and wood boring insects,
including cutworms, armyworms, rootworms, weevils, grubs,
fungus gnat larvae, and many more. They are completely safe
for people, pets and the environment, and are compatible
with other beneficial insects. You can buy these in cartons
from your
gardening store or on line.
Because these beneficial nematodes are microscopic in size,
they cannot be seen by the naked eye. But the seven million
active (live) nematodes in each
container will hunt down, penetrate and kill
most soil dwelling pests. When mixed with water and applied
to the infected area, they swim to and destroy your
pests. Results can be seen almost
immediately!
Parasitic nematodes are microscopic worms which seek out and
then eat their way into the bodies and killing many soil
dwelling pests including grubs, weevils and webworms. Soil
conditions and the method of releasing the nematodes are
critical, so be sure to read and follow the directions.
Nematodes must be replaced each spring. Once you buy the
"good" bugs you have to keep them there and planting the
right plants help greatly.
Plants which attract and provide homes for beneficial
insects include Alyssum, Butterfly weed, Caraway,
Clover, Coriander, Dill, Fennel, Marigolds, Nasturtiums,
Wild carrot and Yarrow. These are all easy to grow.
I like to plant basil in and around my tomatoes as they help
control bugs. This year, in my
patio containers I have put large pots of tomatoes ringed with
basil. I also plant marigolds in my tomato beds because they
help greatly.
Large numbers of beneficial predatory insects can usually be
found in areas or on plants with high populations of harmful
insects like aphids. When the harmful insects are gone, the
predatory insects will leave also.
"Tread the Earth Lightly" and in the meantime
may your day be filled with Peace, Light & Love

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