Visual Proof: How Late-Fall Planting Changes Michigan Garlic Yields
Can I plant garlic cloves purchased from the grocery store produce section?
Avoid them. Most commercial supermarket garlic belongs to softneck varieties sourced from California or China, unsuited to Michigan winters. Additionally, non-organic store-bought bulbs are routinely sprayed with growth inhibitors to delay sprouting, and they may harbor soil-borne viruses that contaminate garden plots permanently. Source certified disease-free seed stock from reputable northern nurseries.
What should I do if green shoots emerge above the mulch in November?
Do not pull them or panic. Early shoots will brown and die back during the first severe January freeze, but the root system underground will remain viable if properly mulched. Add another 2 inches of clean straw directly over the bed to insulate the crown and let the plants rest until April.
When should I pull back the straw mulch in the spring?
Do not strip the bed bare in early spring. Gently fluff the straw in mid-April if it has matted tightly from snowpack, allowing the green shoots to push through easily. Keep a 2- to 3-inch layer around the stems through harvest to cool soil roots during early summer heat waves and suppress invasive weeds.