Garlic is one of the garden's great early-exiters. Planted in fall, it overwinters in the ground, and by mid-July in most zones it's ready to harvest — bulbs cured, beds empty, and summer still ahead. That freed-up space is one of the most valuable succession planting opportunities in the entire growing season. What you plant in those garlic beds in July can produce a second full harvest before frost arrives, or build soil health for the following year. This guide covers the best options: fall brassicas, second-crop carrots, late-season beans, and cover crops — with specific timing for zones 5 through 7.
Understanding the Garlic Harvest Window
Garlic is typically harvested when about half of the lower leaves have yellowed and dried — this usually happens in late June through mid-July depending on your zone and the variety. Hardneck varieties (Rocambole, Porcelain, Purple Stripe) tend to harvest slightly earlier; softneck types (Artichoke, Silverskin) run a bit later.
After harvest, garlic beds need to cure for 2–4 weeks before storage — but that curing happens off the ground, hung in a dry, well-ventilated barn or garage. The beds themselves are free to replant immediately after harvest.
What you plant depends on timing. If garlic comes out July 1 and your first fall frost is October 15, you have roughly 105 days of growing season remaining. That's enough for a surprising number of crops. If garlic comes out July 15 in a shorter-season zone 5 garden with a September 30 frost, you're working with 75 days — tighter, but still enough for fast-maturing crops and cover crops.
Fall Brassicas: The Best Use of Garlic Bed Space
Brassicas (broccoli, kale, cabbage, kohlrabi, and collards) are among the best succession crops for post-garlic beds because they thrive in the cool temperatures of late summer and fall, actually improving in flavor after frost exposure.
Broccoli needs 60–80 days from transplant to harvest. To succeed after July garlic harvest, you need transplants started in late June (about 2 weeks before garlic comes out). Transplant into the garlic beds immediately after harvest. In zones 6–7, broccoli started in late June will be harvesting in September and October. In zone 5 with a shorter window, choose faster-maturing varieties (60-day types like Early Dividend) and prioritize transplanting over direct sowing.
Kale is more forgiving than broccoli — it can be direct sowed into garlic beds in early to mid July (zones 6–7) or transplanted for a head start in zone 5. Kale reaches harvest size in 55–70 days and improves dramatically in flavor after fall frosts convert its starches to sugars. A July planting will be providing harvests from September through hard freeze and often beyond.
Kohlrabi is the fastest brassica — 45–60 days to maturity — making it a reliable post-garlic option even in shorter-season zone 5 gardens. Direct sow in July for September harvest. It tolerates light frosts and stores well in the ground for several weeks after maturity.
Cabbage (for fall harvest) takes 70–100 days and needs to be started as transplants 6–8 weeks before the garlic comes out. If you didn't start cabbage transplants in May, focus on faster crops this season and plan your fall cabbage transplants in advance for next year.
Second-Crop Carrots: A High-Value Use of Garlic Beds
Post-garlic beds are excellent for a second carrot crop. Garlic's deep root system and pest-suppressing allium chemistry leave the soil in good condition, and the loose, well-amended bed that garlic prefers is exactly what carrots need too.
Carrots take 70–80 days to maturity and are actually sweeter when they mature in cooling fall temperatures — cold snaps trigger the plant to convert starches to sugars, making fall carrots notably better-tasting than summer carrots. To get 70–80-day carrots before a zone 6 frost (October 10–15), sow by July 15–20 at the latest. In zone 7, you have until early August.
Prepare the garlic bed by removing all garlic plant debris, working in a balanced fertilizer or compost, and raking to a fine tilth 2–3 inches deep. Carrot seeds are tiny and need close contact with the soil surface to germinate — a smooth, stone-free seedbed is important. Sow thickly (carrot germination rate is rarely 100%) and thin to 2–3 inches apart once seedlings reach 2 inches tall.
Keep the seedbed consistently moist for the first 14–21 days while germination occurs — garlic beds in July can dry out fast. A light covering of row cover or shade cloth during the hottest weeks helps maintain moisture and moderate soil temperature.
Late-Season Beans for a Second Crop
In zones 6 and 7, a post-garlic bean planting in early to mid July can produce a second crop before frost. Bush beans need 50–60 days from sowing and require soil temperatures above 60°F to germinate — both conditions are easily met in July in most zones.
In zone 5, the math is tighter: a July 1 sowing of 55-day beans would mature around August 25 — comfortably before a September 30 first frost with some buffer. A July 15 sowing pushes the maturity date to September 8, still workable. Beyond mid-July in zone 5, the risk of frost cutting off bean production increases significantly.
Choose reliable fast-maturing varieties for this late planting: Provider (50 days), Contender (55 days), or Tendergreen (56 days) are all good options with established track records in challenging conditions. Avoid longer-season bean varieties for this application.
One note: beans fix nitrogen from the air into the soil, making a post-bean planting especially good for soil health. Following garlic (a heavy feeder) with beans (a nitrogen-fixer) and then a fall cover crop creates a productive rotation that improves soil quality season over season.
Cover Crops: Building Soil for Next Year
If the growing season is too short for a second vegetable crop in your zone (or you simply want to invest in long-term soil health), a cover crop sown into garlic beds after harvest is an excellent choice. Cover crops suppress weeds, prevent erosion, fix nitrogen or add organic matter, and improve soil structure — all before they're tilled in the following spring.
Oats: Sow in late July through early August. Oats grow quickly, produce substantial biomass, and winter-kill in most zone 5–6 climates — meaning they die back over winter, leaving a mulch of dead material that breaks down easily when you turn the bed in spring. One of the easiest cover crops for post-garlic beds.
Buckwheat: An excellent summer cover crop that suppresses weeds aggressively, adds organic matter, and scavenges phosphorus. Buckwheat matures and flowers in 30–45 days — cut it down before seed sets (to prevent it from becoming a weed) and till it in. Can be sown immediately after garlic harvest in July and terminated before fall brassicas go in.
Crimson clover: A nitrogen-fixing legume cover crop that overwinters well in zones 6–7. Sow in August, let it overwinter, and till it in the following May before spring planting. Crimson clover is one of the best soil-building cover crops available to home gardeners.
Timing Summary by Zone
Zone 5 (first frost ~September 30): Focus on kohlrabi (direct sow by July 15), kale (transplants or direct sow by July 10), early bush beans (sow by July 10), carrots (sow by July 15), and oat cover crops in August.
Zone 6 (first frost ~October 10–15): All of the above with more flexibility plus broccoli transplants (if started in late June), second-crop carrots through July 20, beans through July 15.
Zone 7 (first frost ~October 25–November 1): Widest options. Fall broccoli, cabbage starts, second-crop carrots through August 1, beans through late July, kale for extended fall harvest.
Frequently Asked Questions
- Should I amend the soil before replanting after garlic?
- Yes — garlic is a nutrient-demanding crop and will have depleted some nitrogen and other nutrients. Before replanting, work in a balanced fertilizer or a 1-2 inch layer of compost. This is especially important for heavy-feeding crops like broccoli and cabbage. For beans (which fix nitrogen themselves), amendment is less critical.
- Can I plant tomatoes or peppers in the space left by garlic?
- Not effectively — tomatoes and peppers started from seed or transplant in July won't have time to produce a meaningful harvest before frost in zone 5 or 6. By July, tomatoes need to be well-established. Post-garlic space is better used for fast-maturing crops like those in this guide.
- What about garlic mustard or other weeds that come in after garlic?
- Act quickly. Empty garden beds fill with weeds fast in July's warm, moist conditions. Prepare the bed and replant within a week of garlic harvest — a new crop in the ground is your best weed suppression. If there's a delay, cover the bed with cardboard or a tarp to prevent weed establishment until you're ready to plant.
- Does growing garlic every year deplete the soil?
- Garlic is a moderate feeder that benefits from annual compost additions but doesn't exhaust soil the way heavy crops like corn do. Rotating garlic through different beds (rather than always in the same spot) helps prevent allium-specific pest and disease buildup and keeps soil in better balance.