Growing Purple Asparagus is no different than growing green asparagus.
Seeds can be started indoors in late winter or early spring for transplanting outdoors after the last frost.
Bare root stock can be planted as soon as the ground is workable in spring.
Pre- Rooted plants can be planted at season end in the fall 4-6 weeks before the first fall frost, they will over winter and grow again after the winter dormancy.
Germination 28 - 35 Days
Slightly Less than 2 Years to Maturity ~ Under good conditions it has a productive life expectancy of approximately 15 years.
Self pollinating. However, you may want to plant pollinating partners to increase crop size. You'll still get Asparagus with just one plant
USDA Hardiness Zones 3 - 9
Plant Height - 3 to 5 Ft
Spread - 16 - 20 Inches
Soil ph: 6.0 -8.0
Yield - Average
If perennial weeds or grasses infest an asparagus bed it is extremely difficult to reclaim it. So keep the asparagus bed well-mulched , using shredded leaves or straw. Weed frequently and carefully, asparagus roots near the surface are easily damaged. Domesticated Asparagus does not compete well with weeds or even other domestic garden plants, do not inter-plant with other crops.