How long does asparagus take to grow from crowns to harvest?
Written by
Paul Reynolds
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Knowing the asparagus growth timeline can save you a lot of disappointment. Crowns need established root systems. If harvested too soon, the plants are ruined for the long term. Having patience now will yield a harvest for decades to come. You will see your first spears in a few weeks, but refrain from harvesting them for one season.
Year One Establishment
- Water crowns immediately after planting with 1 inch of water
- Apply balanced fertilizer 4 weeks after planting
- Allow every spear to grow into full fern foliage
- Never harvest any spears during this critical year
Year Two Limited Harvest
- Begin harvesting when spears reach 6-8 inches tall
- Cut only spears thicker than a pencil
- Limit harvest period to 2-3 weeks maximum
- Continue regular watering and fertilizing schedule
Year Three Full Production
- Extend harvest to 6-8 weeks during spring
- Stop harvesting when spear diameter decreases
- Apply compost tea monthly during fern growth
- Monitor for asparagus beetles and diseases
Adequate soil preparation before planting crowns affects all subsequent growth. Test the pH and adjust it to the 6.5-7.0 range. Organic compost can help break up clay soils, improving drainage. Organic matter can retain moisture in sandy soils. This process sets you up for a lifetime of harvests.
Adjusting seasonal care keeps plants healthy. Water more during summer heat episodes. Apply winter mulch after the first frost has passed. In spring, gradually remove winter mulch. All of this protects the crowns during temperature extremes. Healthy crowns spring back stronger every year.
Established asparagus fields are remarkably low-maintenance. Established crowns have more resistance to pests and disease. With a healthy bed, the roots go much deeper to access water. You will accomplish more with less effort. This is your overall reward for being patient during the earlier stages of your bed.
Experience a long-term payoff as you develop an appreciation for the timeliness of growth. Every time you pull the harvest in the first or second year, you lessen the probability of future harvests. Respected and well-cared-for plants can produce for twenty years or more. Asparagus is a great long-term value in your garden.
Read the full article: How to Grow Asparagus from Crowns Successfully
