Square Foot Gardening Asparagus: From Planting to Harvest, Expert Care and Maintenance

If you're new to square foot gardening, you'll love growing asparagus - it's one of the easiest and most rewarding crops to cultivate.

Asparagus prefers well-draining soil with a pH between 6.5 and 7.5, which is perfect for square foot gardening beds.

Plant asparagus crowns 6-8 inches deep and 12-18 inches apart to give them room to grow.

To get started, choose a sunny spot with at least 6 hours of direct sunlight per day and prepare your soil accordingly.

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If you're planning to grow asparagus in a square foot garden, it's essential to consider the spacing of the crowns. Planting too close together can decrease yields and increase the risk of fungal disease.

Mel recommends planting one or four crowns per square foot, but this may be too dense for a raised bed. Asparagus planting instructions often suggest spacing rows, but even one crown per square foot may not be feasible due to frost protection concerns.

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To determine the right number of crowns for your space, consider the size of your bed. A 4' by 12' bed, like the one in the example, will require some careful planning. For frost protection, ensure that the plants are at least sixteen to eighteen inches away from the edge of the bed.

Given these constraints, it's likely that you'll need to plant fewer crowns than you think. Four per square foot seems excessive, and one per square foot may not be enough. The key is to find a balance that allows for healthy growth and minimal disease risk.

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Asparagus can be grown in a variety of soil types, but it thrives best on well-drained, sandy loam soils.

For optimal results, it's essential to locate your asparagus bed in an area with minimal frost and light freezes, as these can injure emerged spears.

Before planting, make sure the soil is of high fertility and in good physical condition, as asparagus beds can occupy the land for a long time.

Adequate soil moisture is crucial during the first growing season, so water your asparagus thoroughly once a week until the soil is moistened 8 to 12 inches deep.

After the first growing season, asparagus plants develop a deep and extensive root system, reducing the need for frequent irrigation.

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To grow asparagus, you'll want to choose a spot with well-drained soil, preferably sandy loam. This type of soil will give you the best results.

Frost and light freezes can damage emerged spears, so it's essential to locate your asparagus bed in an area that's as frost-free as possible.

High fertility and good physical condition are crucial for the soil before planting asparagus, as the land will be occupied by the crop for a long time.

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Watering is crucial for asparagus plants, especially during the first growing season. Adequate soil moisture is important, so water thoroughly once a week until the soil is moistened 8 to 12 inches deep.

Asparagus plants develop a deep and extensive root system over time, which means they don't require frequent irrigation after the first growing season. However, they should still be watered during long, dry periods.

To avoid burning the roots, apply fertilizer 3 to 4 inches away from the plants, as I've learned from experience. In July of the second growing season, sidedress with another 1.2 pounds of 10-10-10 fertilizer per 20 linear feet of row.

To control weeds in your square foot asparagus bed, cultivate the soil when the weeds are small to avoid damaging the crowns. Cultivating regularly can be a challenge, but it's essential to prevent weeds from shading and competing with your asparagus for water and nutrients.

Mulching is also a great way to control weeds, and you can use organic materials like leaves and straw to keep the soil covered. This will help suppress weed growth and retain moisture in the soil.

Asparagus is susceptible to pests like cutworms and asparagus beetles, so keep an eye out for these common insects. Regularly inspecting your plants can help catch any infestations early on.

Pests can be a real problem for asparagus growers. The principal insect pests are cutworms and asparagus beetles.

To avoid fusarium root-rot, it's essential to plant only disease-free seeds or crowns. Never plant asparagus in beds that previously grew asparagus.

Cutworms and asparagus beetles can cause significant damage to your asparagus crop.

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Weed control is a crucial aspect of maintaining a healthy garden. Weeds can shade your plants, compete for water and nutrients, and even reduce yield.

Cultivating your soil when weeds are small is key to preventing damage to your plants' crowns. Asparagus is particularly vulnerable to weed competition, so it's essential to control weeds early on.

Mulching is a great way to control weeds, and it's especially effective for asparagus. Use organic materials like leaves and straw to keep weeds at bay.

Controlling weeds right from the start will save you a lot of trouble in the long run. It's better to prevent problems than to try and fix them later on.

Harvesting asparagus is a delicate process, and timing is everything. Harvest for two weeks the third year the plants are in the garden, four weeks the fourth year, and six weeks the fifth and following years.

The ideal time to harvest is when the spears emerge in the spring, and you can snap off the spears with tight heads, 7 to 10 inches long, leaving the tough stub on the plant. This will encourage the plant to continue producing more spears.

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Two to three weeks after beginning harvest, it's a good idea to carefully ridge over the row with 5 to 6 inches of soil. This will lower the temperature around the crown and increase spear size, resulting in a more bountiful harvest.

Asparagus is best used as soon as possible after harvesting, but it will maintain fairly good quality for several days if kept at 35-40F.

To keep your harvest fresh for a longer period, make sure to store it in a cool, dry place. This can help extend its shelf life by up to 50%.

Harvesting at the right time is crucial, so be sure to check for optimal ripeness, which typically occurs within 7-10 days of the plant's peak growth stage.

Regular watering is essential, but be careful not to overwater, which can lead to root rot and other issues. Aim for about 1-2 inches of water per week, either from rainfall or irrigation.

Keep your tools clean and sanitized to prevent the spread of diseases. This is especially important when handling plants with delicate or sensitive tissues.

Cleaning your harvest area regularly can help prevent contamination and keep your workspace organized. Set aside some time each week to sweep or vacuum the area and wipe down surfaces with a gentle cleaner.

Harvest asparagus spears when they're 7 to 10 inches long, with tight heads, and snap them off with the tough stub still on the plant.

It's best to harvest for two weeks in the third year, four weeks in the fourth year, and six weeks in the fifth and following years, following a 2-4-6 week sequence.

Harvest all spears that come up during the harvest season, not just the ones that emerge at the beginning.

Two to three weeks after starting harvest, you can carefully ridge over the row with 5 to 6 inches of soil to lower the temperature around the crown and increase spear size.

Rake the ridge level right after the last harvest to prepare for the next year's growth.

Asparagus will maintain good quality for several days if kept at 35-40F, making it a great crop to store for later use.

Ferns prefer moist soil, especially when they're young, but overwatering can lead to root rot and kill the plant.

Regularly checking the soil moisture and adjusting your watering schedule accordingly is key to keeping your ferns healthy.

Most ferns thrive in partial shade, but some species can tolerate full sun if the soil is consistently moist.

Ferns typically require less fertilization than other houseplants, but a balanced fertilizer can promote healthy growth and color.

Some ferns, like the maidenhair fern, require more frequent division and repotting to maintain their shape and prevent them from becoming leggy.