Flash

Family: Brassicaceae Vegetable

Meet Flash collards for a rush of deep, velvety green—leaves that feel substantial and cushiony, with a crisp snap that holds up beautifully.

At maturity in about 60 days, this variety forms an upright, dependable rosette of broad, smooth foliage prized for bold, savory greens in hearty preparations, from slow-simmered classics to quick skillet-style servings and robust sauces. Grow Flash for a steady harvest window and a rich, garden-fresh flavor that stays satisfying from first picking onward.

Light: Full SunMaturity: 60 DaysHabit: Rosette

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Mar 28th
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jun 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	45
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	6

Culinary Notes

Chef's Note

Flash collards land with big, forgiving leaf structure—cushiony yet crisp enough to survive heat without turning to watery mush. Braise them until tender but still spoonable, then sharpen the finish with acid and fat so the greens’ natural bitterness reads as hearty, not harsh.

Best Uses

low-and-slow braise with smoked fat for silky, spoonable leaves
quick skillet wilt and sear for tender-with-a-snap greens
thick, sturdy greens for thickening broth-based soups and stews
puree/blend into a glossy, savory sauce for pasta or grains

Flavor Profile

deep, savory brassica backbone velvety, cushiony leaf texture pleasant crisp snap when cooked al dente savory, slightly bitter finish

Kitchen Pairings

bacon smoked ham hock black pepper apple cider vinegar lemon butter

Frequently Asked Questions

What pest or disease most often affects Brassica oleracea (collards), and how can I control it?

A common problem is cabbage aphids, which cluster on new growth and can stunt plants; check the undersides of leaves every few days. Spray affected plants with a strong jet of water, then apply insecticidal soap (especially under leaves) and repeat every 5–7 days until numbers drop. If you see gray-white powdery patches (powdery mildew), improve airflow by spacing plants and avoid wetting leaves; remove badly infected leaves promptly.

How much should I water Brassica oleracea collards during the main growing phase?

During active growth, keep the root zone evenly moist but not soggy—aim for about 1 inch (2.5 cm) of water per week, more if you have hot, windy weather. Water deeply so moisture reaches several inches down, and let the top 1 inch of soil dry slightly before watering again. Consistent moisture helps prevent leaf edge issues and keeps growth steady for the ~60-day harvest window.

How do I know when Brassica oleracea collards are ready to harvest?

Start harvesting at about 60 days when leaves are large and firm, typically with a dark green color and a sturdy midrib. Pick the outer leaves first when they’re big enough to eat, leaving the center growing point intact for continued production. Taste for tenderness—leaves are ready when they’re fully developed but not tough and fibrous.