cool season · Amaryllidaceae
Growing Garlic Chives in Utah
Flat-leaf chives with a mild garlic flavor. White flowers in late summer — edible. Perennial.
Schedule (May 15 last frost)
When to do what
Start indoors
3/6
Transplant out
4/24
First harvest
7/24
Dates are calibrated for SUS Farms (Sevier County, Zone 6a, last frost May 15). For your own date, use the interactive calendar.
Planting
How deep, how far apart
Method
Start indoors
Seed depth
0.25″
Plant spacing
8″
Row spacing
12″
Germination temp
60–75°F
Days to maturity
90 days
How we grow it
Step-by-step
- 1.
Start indoors 10 weeks before last frost
Seed-starting mix in 2" or 4" cells. Bottom heat at 60–75°F until germination, then drop to room temperature. Light from a clip lamp 14–16 hours a day, 2" from the leaves.
- 2.
Harden off for 7 days before going outside
Day 1: 1 hour outside in shade. Add an hour and more sun each day. Skip the day if it’s windy or below 50°F. After day 7 the plants stay outside.
- 3.
Transplant 8″ apart in rows 12″ apart
Soil should be at least 60°F before transplanting — black plastic mulch laid down two weeks ahead helps in our cool springs. Water in deeply.
- 4.
Mulch and water consistently
2" of straw or wood chip mulch around the base. Drip line at the surface. Aim for 1" per week — including rain — measured at soil level, not by the calendar.
- 5.
Harvest around day 90
Days-to-maturity is a rough guide — taste, color, and size are the real signals. Flat-leaf chives with a mild garlic flavor. White flowers in late summer — edible. Perennial.
From the farm
What we’ve learned growing garlic chives
Herbs like garlic chives pull double duty on the farm — they flavor what we cook, attract beneficial insects to the vegetable rows, and most are forgiving enough to survive an inattentive week. We grow most of our culinary herbs in raised beds near the kitchen entrance; the ornamental and pollinator-magnet varieties go out in mixed border plantings.
Variety options
Specific garlic chives varieties we grow
Within garlic chives, the variety choice matters — flavor, disease resistance, days to maturity, and storage life all swing wildly. These are the cultivars in our catalog, each with its own grow guide.
Pests & problems
Amaryllidaceae family pressures in Utah
Garlic Chives shares its troubles with onions, leeks, garlic, chives, shallots. The pests and diseases below show up most years; the fixes are what we actually do, not what catalogs sell.
Scout weekly during the growing season — most outbreaks are 10x easier to manage when you catch them in week one.
Pest 1
Onion thrips — silvery streaks on leaves; reduces bulb size. Reflective mulch (silver plastic) confuses them; spinosad spray for serious outbreaks.
Pest 2
Onion maggot — larva tunnels into bulbs. Floating row cover early-season; rotate aggressively.
Disease 1
White rot — fungal sclerotia in soil persist 20+ years; cottony growth on bulbs. If confirmed, abandon the bed for alliums.
Disease 2
Pink root — pink-tinged roots; reduces yield. Solarize soil in summer; long rotations.
Companion planting
What to plant near (and away from) garlic chives
Most companion-planting charts you see online are folklore. The pairings below have either USU Extension research, Cornell vegetable MD pages, or our own multi-year farm logs behind them.
Plant near
Good companions
- ✓Carrots (mask each other's pest scents)
- ✓Brassicas (deters cabbage moth)
- ✓Tomatoes, peppers (general pest deterrence)
- ✓Strawberries
Plant away from
Bad companions
- ✗Beans, peas (alliums stunt legume growth)
- ✗Asparagus (some allelopathy reported)
Crop rotation
Alliums in their own light-feeder slot — can rotate with brassicas without issue.
Harvest & storage
Picking, keeping, preserving
When to pick
Mid-morning, after dew dries but before the heat rises. Essential oil concentrations peak just before flowering — pinch flower buds for the strongest flavor. Pick the upper third of the stem, never strip a plant of more than 30% of its leaves at once.
Drying for storage
Hang small bundles upside down in a dry, dark, ventilated room — attic, garage, or closet works. 10-14 days for most herbs. Store dried leaves in airtight glass jars away from light. Quality holds 1 year. Beyond that, the herbs are still safe but flavor fades fast.
Freezing
Better than drying for high-water herbs (basil, parsley, cilantro). Chop, pack in ice cube trays with a splash of olive oil, freeze, transfer cubes to a labeled bag. Drop straight into hot dishes — no thaw needed.
Mistakes we’ve made
Common ways to fail at garlic chives
Each of these has cost us a season at some point. Easier to learn from someone else’s lost crop than your own.
Planting too deep
The fix:Garlic Chives seeds want exactly 0.25" of cover — about a quarter of an inch — about the diameter of a pencil. Deeper than that and the seedling exhausts itself before reaching light. Carrots and lettuce especially: shallow is right; sprinkle, then cover with a dusting of soil and tamp gently.
Skipping the harden-off step
The fix:Plants raised under indoor lights have soft cuticles and weak stems. Move them straight outside and they sunburn, snap in wind, or wilt and never recover. The 7-day gradual sun exposure is mandatory, not optional.
Watering on a calendar instead of by need
The fix:Stick a finger or screwdriver 4" into the bed. Damp at depth = wait. Dry at depth = water deeply. Calendar watering ignores rain, heat waves, and seasonal evapotranspiration — leading to either drought stress or root rot.
Ignoring soil pH
The fix:Most Utah backyard soil tests at pH 7.4-8.4 (alkaline). Iron and zinc become unavailable to roots above pH 7.5 — leaves yellow, growth stalls. A $20 mailer test from USU Extension tells you exactly what your soil needs. Sulfur amendment in fall, foliar iron mid-season as needed.
Letting heat-bolt happen mid-season
The fix:Cool-season crops bolt (go to seed, become bitter) when night temps stay above 70°F. Plant for an early-spring AND late-summer harvest, with a heat gap in between. Fall plantings of lettuce, spinach, and brassicas are often better than spring ones in Utah.
Common questions
Frequently asked about garlic chives
+When should I start garlic chives indoors in Utah?
In Sevier County (last frost May 15), start 10 weeks before — that's roughly March. If you're at higher elevation (Park City, Logan), add 2 weeks. Lower elevation (Salt Lake, St. George), subtract 2-4 weeks. Use the interactive seed-starting calendar at /seeds/calendar to dial it in for your specific frost date.
+Why are my garlic chives leaves turning yellow?
Three usual suspects. (1) Iron chlorosis — yellow leaves with green veins is the Utah classic; the cause is alkaline soil locking up iron. Foliar iron rescues the season; sulfur amendment in fall fixes it long-term. (2) Nitrogen deficiency — entire leaf yellow including veins, starts with old leaves. Side-dress with compost or a slow-release organic fertilizer. (3) Overwatering — yellowing accompanied by soft, mushy stems means the roots are drowning. Check drainage; reduce water frequency.
+Will garlic chives survive a late frost in Utah?
Garlic Chives is a cool-season crop and tolerates light frost (down to ~28°F) once established. Tender seedlings just out of the greenhouse are more vulnerable — cover with floating row cover when overnight forecasts show below 35°F. After hardening off properly, mature plants of this family typically shrug off late-spring frosts that would kill warm-season crops.
+How long does garlic chives take from seed to harvest?
90 days from transplant. Add 70 days for the indoor seed-starting phase, so total time from sowing seed to first harvest is roughly 160 days. Days-to-maturity is a baseline — cool springs add a week or two; hot summers can speed up by similar amounts. Use it for planning, not as a strict calendar.
+What's the spacing between garlic chives plants?
8" between plants in the row, 12" between rows. That gives mature plants room to fill in without competing. Closer spacing reduces yield per plant; wider spacing wastes garden space. The numbers come from average mature plant size at full vegetative growth — adjust slightly for compact varieties (closer) or large heirlooms (wider).
Same family (Amaryllidaceae)
Related crops
Sources:Johnny’s Selected Seeds·USU Extension·Cross-checked with our greenhouse logs.