How to Grow Edible Asparagus in a Raised Bed

Asparagus is rich in vitamins A, B2, and C and contains iron, calcium, and potassium
(Ingram, 2002). Asparagus is a perennial vegetable suitable for all zones. Asparagus requires a lot of water and full sun. Plants reach full production in 2 - 3 years and continue producing for 10 - 15 years.

PLANTING

WHEN: Early Spring (cold climates); Fall and Winter (warm climates)

WHERE: Sunny location; 8" below ground level; 12" apart

HOW:
Fill raised bed with loose, rich soil to 8" below the top of the bed


Form 2 rows of mounds spaced 12" apart 



Drape roots evenly over mount



Cover with 2" of soil



Soak with water

(During the 1st season Only)- Fill the bed as the shoots appear until you reach the top of the bed

NOTE: Do not cover growing tip!

GROWING

Cultivate, feed and water heavily.

BLANCHING

White asparagus form in the absence of sunlight. To achieve this, in spring, mount 8" of soil over the row of asparagus. When tip appears, cut spear with a long-handled knife. Push knife into the mount to the base and cut. Pull spar out of soil. Level soil at the end of season.

HARVESTING

WHAT: 5-8" long spears

WHEN:
  • 2nd year: 4 to 6 week period
  • 3rd + year: 8 to 10 week period
  • Cut until spears become thin, which indicates the root system has reach potential
HOW:
  • Use a sharp knife
  • Cut at a 45 degree angle toward the soil
OVER-WINTERING

In early winter, cut brown, dead ferns. Cut down to ground level. In cold areas, leave dead stalks until spring. The dead stalks hold the snow and protect the root crown.

COOKING:

This recipe is adapted from one found in The Essential Vegetarian Cookbook by Bay Books, 2011.

Char-grilled Spring Onion and Asparagus (4 - 6 Servings):

Cut 10oz of asparagus and 12 spring onions into 5" lengths. Brush the spring onion an asparagus with olive oil. Cook on a preheated grill for 3 minutes. Do not overcook! Serve with a topping of balsamic vinegar, black pepper, and Parmesan cheese.

Asparagus is nutritious, delicious, and attractive plant when grown as an ornamental or incorporated into a permaculture. Use asparagus along a fence or pathway. Uncut spears reach a height of 4 to 6 feet. Support stalks with stakes and twin.

Asparagus is a good addition to the home garden. Once established, it's a low maintenance,  high producing vegetable. 

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