County of Union, New Jersey. Freeholder Meeting Cancelled. Due to potential health and public safety issues caused by a water main break on Elizabethtown Plaza in Elizabeth, the 4-13-2017 Regular Freeholder meeting has been canceled. The rescheduled date will be announced on Monday. County Departments, Divisions and Offices.
Grown Outdoors. Asparagus fern growing outdoors can withstand some light frost, but freezing temperatures, below 32 degrees Fahrenheit, often kill the plant to the ground. After a light frost, the plants do grow back from the roots.rown Indoors. You can grow fern asparagus as a houseplant in any region. Indoors, the plant still needs warm temperatures, but not too warm. A good daytime temperature is about 72 degrees Fahrenheit with a cooler temperature around 60 degrees Fahrenheit at night.
Planting Asparagus Crowns. Asparagus should be planted in the spring, after the soil temperature reaches 50Â°. Asparagus plants are normally sold as 1 or 2 year old crowns. Their fleshy roots should not be allowed to dry out. Once the soil has been prepared and raked smooth, you are ready to plant your Asparagus.arvesting Asparagus. Do not harvest anything from crown grown Asparagus plants in their first year, or the second year for seed grown plants. The following year you can harvest very lightly. if the spears are nice and thick. The next year you should limit the harvest period to 4 or 5 weeks.