\u00a9 2020 wikiHow, Inc. All rights reserved. Water immediately after planting. Plants use nutrients from the soil as they grow, so replenishing the nutrients ensures your plants grow to their full potential. They'll eat the eggs and larvae of some “bad bugs” and help control them. In Minnesota, asparagus is planted between early May and early June. Harvest shoots when they are between 6 inches (15cm) and 10 inches (25.4cm) long. Asparagus also needs space, about 4 to 5 feet for each plant. Then work in several inches of, Next, ask your county extension service to test your soil. Purple Passion: A purple, open-pollinated variety. Only plants with all female flowers produce red, inedible berries in summer. Planting and Growing an Asparagus Bed from Crowns, How to Care for an Asparagus Bed Year-Round, Fertilizing Asparagus Before and After Planting, Caring for the Ferny Foliage of Asparagus Plants, Differences Between Male and Female Asparagus Flowers and Plants, Identifying and Controlling Asparagus Beetles. Asparagus crowns can be planted from July to December in warmer parts of the country and from September to December in cooler parts of the country. Buy the four tree collection for £27.99 or buy in pairs for £14.99. © You may hear them referred to as roots. Asparagus is often started from one-year crowns, however you can plant asparagus from seed, too! Cultivating in the spring allows for the addition of fertilizer to the soil, but can also stimulate the growth of weed seeds that were previously buried. How to Handle Insects and Diseases These buds and roots are called “crowns.” If spears are left to grow, they develop leaves and are called “ferns.” Asparagus harvest is only two months instead of the entire season, because the plants need a chance to let the ferns grow in order to recover and build up energy for the next year. Asparagus is ready to harvest two years after planting one-year-old crowns. At both times, the cultivation must be very shallow, less than 2 inches deep. Watch Monty Don‘s comprehensive guide to planting bare-root asparagus crowns, below. Dig a trench a foot deep and 18 inches wide. Leave a distance of 4 feet, center to center, between the trenches, if planting more than one row of asparagus. Healthy, dense cover crops can help outcompete weeds, without disturbing the soil through cultivation. It will be returned to the trench several weeks later as the ferns grow. Harvest spears when they reach 12cm in length, cutting them off the crowns beneath the soil with a serrated knife. The rest of the remaining soil will be added to the trench a few weeks later, once the ferns have emerged and grown. Cindy Tong, Extension horticulturalist, Jill MacKenzie and Annie Klodd, Assistant Extension professor. Asparagus is grown from crowns, or one-year old plants, that are typically sold in early spring. Don't get rid of "good bugs" like ladybugs and lacewings in your garden. Avoid areas with shallow soils, or soils prone to water-saturation. In larger patches with multiple rows, the aisles between the rows can be mulched using wood chips, straw, or landscape fabric. You may want more if you plan to freeze some for the winter. Removing weeds by hand is still one of the most effective methods, especially in smaller asparagus beds. At the bottom of the planting trench, mix in a 5-10-5 fertilizer into the soil and then cover it with about 2 inches (5cm) of soil before placing the crowns in the trench. Thick, white stalks are better for grilling, roasting or simmering. If drainage at your site is slow, consider building a raised bed and filling it with sandy-loam soil mixed with generous amounts of compost to create better drainage for the plants. If you plant 2 rows 4 feet (1.2 meters) apart, and you plant a total of 20 crowns at 1 foot (30.5cm) spacing in each row, you will need an area of 4 feet (1.2 meters) by 10 feet (3 meters) in size for your asparagus patch. Plants suffering from crown rot have poor growth. The asparagus harvest season lasts about 6-8 weeks, from early May to late June in Minnesota. Here, Monty Don demonstrates how to cut back asparagus foliage at the end of the season, and how to mulch around the plants: Don’t harvest asparagus for the first two years after planting. The edible parts of the plant are called the spears. Young asparagus plants will grow here for their first year. Cut back the tall, ferny foliage in autumn. They are cold tolerant, resistant to common asparagus diseases, and produce a big harvest of large spears. Asparagus rust causes yellow and rusty orange spots to form on asparagus stems after harvest. As the soil is removed from the trench, set it directly to the side. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Additionally, soils covered in mulch will retain more water. There are 10 references cited in this article, which can be found at the bottom of the page. Choose its spot in the garden carefully. References. University of Minnesota Extension discovers science-based solutions, delivers practical education, and engages Minnesotans to build a better future. Asparagus shoots, the edible part, come up early in the spring. Harvest spears until June 30, and then allow the large feathery ferns to develop. Common diseases of asparagus include Fusarium crown rot, asparagus rust, and Stemphylium purple spot. Once established asparagus seems to be happy in a sunny, free draining, moist warm soil. Once you’ve got sprouts, they should be able to push through the soil that you've added.
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