Growing Asparagus at Home
I don't know about you, but I just LOVE asparagus and could eat it all day everyday if it was available.
it is so expensive in the stores so it makes perfectly good sense to grow asparagus at home if you are lucky enough to have the room.
Here is a wonderful article which explains just how to go about this task so that you too can enjoy the freshest possible asparagus ever!
How To Grow Asparagus
Photo by Rob Ireton
Grow your own asparagus because the freshly picked asparagus
is far superior to the store-bought one.
Asparagus is one of the first crops of spring harvest. This
perennial vegetable is rich in vitamin C, B vitamins, calcium, and iron and is
beloved for its delicious young shoots. And it just happens that freshly picked
spears are far more tender, crunchy and tasty than store-bought.
Asparagus thrives in any area having winter ground freezes
or dry seasons. In fact, the mild, wet regions of Florida and the Gulf Coast
are about the only places where it is difficult to grow it.
Planting asparagus
You should select and prepare your asparagus bed with
care—this crop will occupy the same spot for 20 years or more. It can tolerate
some shade, but full sun produces more vigorous plants and helps minimize
disease.
Asparagus does best in lighter soils that warm up quickly in
spring and drain well. Standing water will quickly rot the roots. Prepare a
planting bed about 4 feet wide by removing all perennial weeds and roots and
digging in plenty of aged manure or compost.
Asparagus plants are monoecious—meaning each individual
plant is either male or female. Some varieties of asparagus, such as Jersey
Knight and Jersey Giant, produce all male or primarily
male plants, so they’re more productive. Male plants yield more harvestable
shoots because they don’t have to “invest” energy in producing seeds.
Choose an all-male variety if high yield is your primary
goal. If you like to experiment, you may also want to grow an heirloom variety
or a purple-stalked variety like Purple Passion. With an all-male
variety, 25 plants are usually adequate for a household of four. You can plant
double that amount for standard varieties.
Starting asparagus from 1-year-old crowns gives you a year’s
advantage over seed-grown plants. 2-year-old crowns are usually not a bargain.
They tend to suffer more from transplant shock and won’t produce any faster
than 1-year-old crowns.
Buy crowns from a reputable nursery that sells fresh, firm,
disease-free roots. Plant them immediately if possible. Otherwise, wrap them in
slightly damp sphagnum moss until you are ready to plant.
To plant asparagus crowns, dig trenches 12 inches wide and 6
inches deep (8 inches in sandy soil) down the center of the prepared bed. Soak
the crowns in compost tea for 20 minutes before planting. Place the crowns in
the trenches 1½ to 2 feet apart. Top them with 2 to 3 inches of soil. 2 weeks
later, add another inch or two of soil. Continue adding soil periodically until
the soil is slightly mounded above surface level to allow for settling.
Maintenance
Apply mulch to smother weeds, which compete with the young
asparagus spears and reduce yields. Carefully remove any weeds that appear.
Water regularly during the first 2 years after planting. As asparagus matures,
it crowds out most weeds and sends long, fleshy roots deep into the earth, so
watering is less critical. Fertilize in spring and fall by
top-dressing with liquid fertilizer (such as compost tea) or side-dressing with
a balanced organic fertilizer.
Leave winter-killed foliage, along with straw or other light
mulch, on the bed to provide winter protection.
Remove and destroy the fernlike foliage before new growth
appears in spring since it can harbor diseases and pest eggs.
If you want to grow white asparagus, which has a slightly
milder flavor than green asparagus, blanch the spears by heaping up soil or
mulch over the bed before they emerge.
This is how asparagus is started from seed
It takes patience to start your asparagus patch from seed,
but there are advantages to gain from the extra wait. Seed-grown plants don’t
suffer from transplant trauma like nursery-grown roots, and you can buy a whole
packet of seed for the same price you’ll pay for 1 asparagus crown.
Most seed-grown asparagus plants eventually out-produce
those started from roots. Growing from seed also allows you to selectively discard
female plants and plant an all-male bed, no matter what variety you choose to
grow.
In the North, start seedlings indoors in late February or
early March. Sow single seeds in newspaper pots, place the pots in a sunny
window, and use bottom heat to maintain the temperature of the mix in the pots
at 77°F. When the asparagus seeds sprout, lower the temperature to 60° to 70°F.
Once the danger of frost is past, plant the seedlings (which should be about 1
foot tall) 2 to 3 inches deep in a nursery bed.
When tiny flowers appear, observe them with a magnifying
glass. Female flowers have well-developed, 3-lobed pistils; male blossoms are
larger and longer than female flowers. Weed out all female plants. The
following spring, transplant the males to the permanent bed.
Pest control
Healthy asparagus foliage is necessary for good root and
spear production. Asparagus beetles, which chew on spears in spring and attack
summer foliage, are the most prevalent problem. The 1/4-inch-long,
metallic blue-black pests have 3 white or yellow spots on their backs. They lay
dark eggs along the leaves, which hatch into light gray or brown larvae with
black heads and feet. Control them by removing them with your hand. Spray or
dust seriously infested plants with insecticidal soap. These methods also
control the 12-spotted asparagus beetle, which is reddish brown with 6 black
spots on each wing cover. Asparagus miner is another foliage-feeding pest. It
makes zig-zag tunnels on the stalks. Destroy any infested ferns.
Defects of the plant
Avoid asparagus rust, which produces reddish brown spots on
the stems and leaves, by planting resistant cultivars. Minimize damage from
Fusarium wilt, which causes spears, leaves, and stems to be small with large
lesions at or below the soil line, by purchasing disease-free roots and using
good garden sanitation. Crown rot causes spears to turn brown near the soil
line. Prevent crown rot by planting in raised beds, maintaining good drainage,
and keeping the soil pH above 6.0.
If your asparagus bed does become infected by disease, your
best option is to start a new bed in a distant part of the garden, using newly
purchased or grown plants.
If young asparagus spears turn brown and become soft or
withered, they may have been injured by frostbite. Cover spears with mulch or
newspaper when freezing nights are forecasted.
Harvesting of the ‘deli vegetable’
Do not harvest any spears during the first 2 years when
plants are in their permanent bed. They need to put all their energy into
establishing deep roots. During the third season, pick the spears over a 4-week
period, and by the fourth year, extend your harvest to 8 weeks. In early
spring, harvest spears every third day or so.
As the weather warms, you might have to pick twice a day to
keep up with production. Cut asparagus spears with a sharp knife or snap off
the spears at the ground level, or right below the ground level, with your
fingers.
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