Asparagus


QUICK REFERENCE PLANTING GUIDE

1. Light/Sun Exposure - Full to partial sun.

 

2. USDA Hardiness Zones - 3 to 9.

 

3. Planting Distance - 18 inches apart in rows 4 feet apart. 'Sweet Purple' will need to be planted 24 to 30 inches apart.

 

4. Mature Height/Spread - 2-3 feet the 1st year with more dense 6 foot clumps within 2 years. 'Sweet Purple' will each 4- to 5 feet tall with a 12 to 30 inch spread when mature in 2 years. The spears are 6 to 9 inches long.

5. Bloom Time - N/A.

6. Planting Instructions - Place the plants in a trench 12 to 18 inches wide and a full six inches deep. The crowns should be spaced 9 to 12 inches apart. Spread the roots out uniformly, with the crown bud side up in an upright, centered position, slightly higher than the roots.

Cover the crown with two inches of soil. Gradually fill the remaining portion of the trench during the first summer, as the plants grow taller. Asparagus has a tendency to "rise" as the plants mature with the crowns gradually growing closer to the soil surface. Many gardeners apply an additional 1 to 2 inches of soil from between the rows in later years.

 

Cover the bed with a 3-inch layer of clean straw, compost or other mulch material, water thoroughly and allow the plants to grow the rest of the year.

SOIL PREPARATION

Although these plants will perform well in average garden soils of all types, we recommend having your soil tested periodically by the local County Extension Office.  These tests can determine if the soil needs any amendments to enhance your plants' growth and performance.  See below for our recommended practice to improve your soil without any additional testing:

 

1.  Spade or till the soil to a depth of 12-18 inches.

 

2.  To provide nutrients and improve drainage, add organic matter to your soil by mixing in a 2 to 4-inch layer of dehydrated manure, garden compost, shredded leaves, and/or peat moss.

3.  After active growth begins, periodically feed with Cottage Farms' water soluble Carefree Bud-N-Flower Booster for Fruits and Vegetables. Plants in containers need more frequent watering and feeding, especially when in active growth and bloom.

CONTINUING CARE

 

Water - Your plants require 1" of rainfall (or equivalent watering) each week when planted in the ground.  Do not allow plants in containers to dry out.  In a container that is exposed to full sun, water it well at least once every other day, and possibly every day, during periods of intense summer heat.  You may wish to temporarily move containerized plants to an area where they are shielded from the hot summer sun (i.e., in the shade of a tree, on a porch near an overhang.

 

Mulching - Apply a 2-4 inch layer of shredded bark, compost or other organic mulch around your plants to promote moisture retention, maintain even soil temperatures, and to discourage weed growth.

 

Weeding - Keep the area around your plants free of weeds. Weeds compete with all plants for food, water and light. Walk around the garden periodically and pull weeds, including the roots, as soon as you see them.

 

Grooming - Clip off dead or unsightly growth to maintain attractive form and shape.  Deadhead or remove flowers when blooms have faded, leaving as much foliage as possible.  As long as the foliage remains green it will gather sunlight and transmit energy into the root system for the following growing season.

 

Feeding - Feed your plants once every 2-3 weeks during the growing season with a water-soluble fertilizer such as Cottage Farms' Carefree Bud-N-Flower Booster for Fruits and Vegetables.

 

Harvesting - For best crops asparagus should not be harvested until the third year after planting crowns. However, a small harvest the 2nd year won't be disastrous. The primary reason for a delay is that the plants are still expanding their root storage system and excessive removal of spears weakens the plants. By the 3rd year and thereafter, the spears may be harvested from their first appearance in the spring through July.

 

Harvest spears 5 to 8 inches in length by cutting or snapping. To cut a spear, run a knife into the soil at the base of the spear and carefully sever it. Because the spear is cut below the point where fiber develops, it becomes necessary to remove the fibrous base from the tender stalk. Cutting may damage some spear tips that have not yet emerged from the ground. To snap a spear, grasp it near the base and bend it toward the ground. The spear breaks at the lowest point where it is free of fiber.

 

Winterizing - The time to protect your plants in the garden is after the ground has frozen. At that time, apply a winter mulch of evergreen boughs, straws or leaves to prevent lifting of the plant's roots during alternating periods of freezing and thawing.

 

In spring, remove the mulch from in-ground plantings.   

CAUTION: Not all plant material is edible. Though most plants are harmless, some contain toxic substances which can cause headaches, nausea, dizziness, or other discomforts. As a general rule, only known food products should be eaten. In case of ingestion, please contact your local poison control center at once and advise them of the plant ingested. Keep out of reach of children.