By Sarah Zeiler
After the fall harvest, many home gardeners pack up their tools and wait for spring. But this quiet season is actually a great time to improve your soil using winter cover crops. These crops grow in the cooler months and offer benefits like erosion control, weed suppression and improved soil fertility. Some die off naturally in winter, while others survive and need to be managed in spring.
Cover crops that work
Several cover crops are well-suited for planting after fall harvest in the Midwest. These crops grow in cool weather and offer strong benefits for soil health.
- Oats: Oats are a popular winter-kill cover crop. They grow fast, suppress weeds and add organic matter to the soil. After dying off in winter, they decompose and enrich the soil for spring planting.
- Cereal Rye: Rye is winter-hardy and survives cold temperatures. It grows deep roots that loosen compacted soil and suppress weeds. In spring, it must be mowed or tilled before planting vegetables.
- Garden Peas: These legumes fix nitrogen in the soil and grow quickly in fall. They die off with frost, leaving behind nutrients for spring crops.
These crops are ideal for Michigan and other Midwestern states, where fall planting windows are short and winters are cold.
What Doesn’t Work
Some cover crops are less effective for winter use, especially in cold climates.
- Daikon Radishes (Oilseed Radish): While not ideal for winter survival, daikon radishes are useful in fall. Their deep taproots break up compacted soil and improve drainage. Radishes are best used to open up the ground before winter, especially in areas with heavy foot traffic or poor drainage. However, they die off in winter and should not be relied on for spring weed suppression. The rotting radishes can also be smelly and cause problems with neighbors. The radishes may also harbor diseases and pests for your spring brassica crops like cabbage and broccoli.
Source : msu.edu