How Does Asparagus Survive the Winter? A Detailed Guide to Overwintering Management

Asparagus is a relatively green and healthy vegetable, and it is nutritious even when simply boiled in water, so when growing it, how does asparagus survive the winter?

1. Growth Habits of Asparagus

Asparagus is the young shoot of Asparagus officinalis, a plant in the Asparagaceae family, Asparagus genus, also called lu sun or asparagus, and it is grown in many places around the world.

Asparagus can be cultivated in both the subarctic and subtropical zones; it is a plant with strong adaptability to temperature, but it grows best when cultivated in temperate zones with four distinct seasons and a pleasant climate.

The suitable germination temperature for asparagus seeds is 25°C-30°C. Above 30°C, the germination rate and germination vigor of asparagus seeds will decline noticeably.

Asparagus sprouts 2-3 times each year, and generally the tender shoots that sprout in spring are eaten.

2. How Does Asparagus Survive the Winter?

1. Disinfection: Around the Beginning of Spring, remove the plants above ground, scrape the soil clean and expose it to the sun, then apply di chong sha xing to eliminate overwintering pathogens;

2. Fertilizing: After harvesting asparagus in autumn, apply heavy overwintering fertilizer in several rounds to ensure asparagus has enough nutrients to get through the winter;

3. Clear the ditches in time: soil with a high water content will affect asparagus growth, so the ditches need to be cleared in time to lower the water level.

3. Pest and Disease Control for Asparagus

Asparagus pests and diseases generally include stem blight, sclerotinia rot, and damping-off, among which:

1. For stem blight and sclerotinia rot in the early stage of disease, use a 70% thiophanate-methyl 800-1000 times solution, 1:1:240 Bordeaux mixture, or a 50% amobam 1000 times solution once every 7-10 days, spraying 2-3 times in succession.

2. For damping-off control, when transplanting seedlings, use benomyl or benodanil at a 400-500 times solution based on active ingredient, and soak the roots for 15 minutes for control.