How to grow asparagus in a container

Yes, You Can Grow Asparagus In Containers

If you have a lot of garden space, then growing a lot of asparagus should be no problem.

Limitations of Container Growing

While asparagus isn’t generally planted in containers, it’s not impossible. However, there are some limitations. First, it’s important to find a container that’s large enough and wide enough to meet the plant’s needs. It should be about 16 gallons.

Asparagus crowns are usually available just once a year in early spring. So plan accordingly. Once the bed is weed-free, dig a trench about 12″ deep and a foot wide. The crowns should be planted at 18″ intervals in the bed, so put a shovel of compost and a cup of all-purpose, organic fertilizer in the trench every 18″.

A Plant That Takes Its Time

Asparagus seeds can take 21 days — and even far longer — to germinate. It takes three to four years for a young plant to develop the maturity needed to support annual harvests that last four to six weeks. Until then, one must harvest sparingly.

Each plant yields about 1/2 pound of asparagus spears each harvest.

Now, let’s get to the question: does asparagus regrow after cutting. The answer is yes because perennial plants return year after year.

There are two main crops to avoid growing alongside asparagus: Alliums. Alliums like leeks, garlic, and onion sharing the soil with asparagus are said to stunt its growth. That doesn’t mean you have to choose between them: Just plant any alliums a good distance away from asparagus beds and they’ll be fine.

Thin asparagus spears appear for a number of reasons, but the root cause is ultimately the same: the asparagus crown lacks the rigor to create bigger shoots. Improper Feeding – Asparagus are somewhat heavy feeders and need all the food they can get in order to build strong spears the following year.

Asparagus plants are long-lived and vigorous. When asparagus plants are growing in a sunny site with good drainage, proper irrigation, and adequate nutrients, the plants multiply and become crowded over time. During this time, a healthy plant should produce around 20 spears.

Yes, asparagus will spread as it grows. Asparagus roots can spread out up to 6 feet (1.8 meters) underground. Asparagus ferns (mature spears with foliage) can spread out 3 feet (90 centimeters) above ground. An older, more mature asparagus plant will send up more spears from its larger crown and energy reserves.

Plant asparagus in spring or fall in a sunny spot with nutrient-rich, well-drained soil. Asparagus takes a few seasons to mature but will reap a harvest for 15 to 30 years, so choose a planting location that will go undisturbed for a long time.

Since you will only have the leaf buds of asparagus on your plate, you don’t have to let the plant go to seed. The ferns with berries tend to bend towards the ground and touch the wet soil, which can spread a fungal disease in the plants.

If they don’t, asparagus beetles will lay their eggs in those ferns. Since the length of harvest season will vary from year-to-year depending on air temperature, harvesting should be stopped when the diameter of 75% of the spears becomes small (less than 3/8 inches).