Mulch helps minimize
frost heaving of the crowns, and can be left in place to
maintain soil moisture, moderate soil temperature, and help keep
weeds down during next year’s growing season.
When to fertilize asparagus
Asparagus is best
fertilized in spring when harvest time ends. Fertilization
should be based on soil test results. Soil test kits are
available from your local Penn State Cooperative Extension
office. In Allegheny County, soil test kits are $12 for the
first kit and $9 for additional kits ordered at the same time.
They come with complete information for taking representative
samples and understanding your soil test results. You can send a
check for the cost of the number of kits you want to Penn State
Extension, Soil Test Kits, 400 N. Lexington St., Pittsburgh
15208. Make checks payable to Penn State Extension.
Once you purchase
the kit, take the sample and fill out the paperwork, and then
send it to Penn State’s Agricultural Analytical Laboratory. The
fee covers the cost of the kit and the actual testing. Your only
other cost is the postage to send it to the university. The kit
is a self-contained mailer with the lab’s address pre-printed on
it. Once asparagus is established, nitrogen is the main nutrient
that has to be applied annually.
Composting for the garden
Overwintering Flower Bulbs