Garlic production is a waiting game, but two mid-season interventions can significantly increase the size of your final bulbs. By properly removing scapes and applying protective mulch, you help your plants focus their energy where it matters most: underground. This guide helps you maximize your yield before the summer harvest.
The Role of Scape Removal
If you grow Allium sativum (hardneck garlic), you will notice a curly, green stalk emerging from the center of the plant in late spring. This is the scape, the plant's flower stalk. If left to bloom, the plant shifts its focus to seed production, which saps energy away from the bulb.
- Wait until the scape begins to curl into a loop.
- Use sharp, sanitized garden shears to snip the stalk off at the base where it emerges from the leaves.
- Harvest these scapes for kitchen use—they make excellent pesto or stir-fries.
Pro tip: Removing the scape early effectively triggers the plant to redirect nutrients downward, often resulting in bulbs that are 20 to 30 percent larger by harvest time.
Benefits of Mid-Season Mulching
Applying a layer of mulch is not just for winter protection; it is a critical strategy for late-season success. As temperatures rise above 75°F in USDA zones 4 through 8, the soil begins to dry out rapidly. Mulching regulates soil temperature and retains vital moisture, preventing the stunted bulb growth that occurs during heat stress.
- Apply 2 to 3 inches of clean straw, pine needles, or shredded leaves around the base of the plants.
- Ensure the mulch does not directly touch the garlic stem to prevent rot.
- This layer also acts as an effective weed suppressant, meaning your garlic won't have to compete for nutrients in the soil.
Monitoring for Harvest
Once you have managed your scapes and mulched, your main task is consistent watering. As the lower leaves begin to turn brown and wither—typically in mid-to-late summer—you are approaching the harvest window. Stop watering about two weeks before you plan to pull the bulbs to allow the skins to harden, which improves long-term storage. By following these two specific care steps, you will ensure your patch reaches its full potential before you lift the bulbs from the soil.