Leek American Flag Seeds – Heirloom Cold-Hardy Favorite

Ontario Grown
Share
- WhatsApp
- Deel
- X
- Pin it
- Messenger
- Email

Product form

Clear duties overview for US customers at checkout: Grand Seeds covers 50% tariffs on your order!

In Stock - Shipped within 5 days

Contains about 1 gram of seeds

$1.99

SKU: GS-6850-LEE-DT

Free shipping on orders over $50 (in Canada)

Organicly grown

Non GMO

Description

American Flag Leek (Allium ampeloprasum), also known as Broad London, is a historic heirloom favorite prized for its thick, solid shafts and mild, sweet onion flavor. Producing long, cylindrical white stems topped with fan-like, blue-green foliage, it develops a tender texture that enhances soups, stews, potato dishes, and quiches. Exceptionally cold-tolerant, this reliable variety can be harvested from late autumn right through winter in mild spells, offering a steady supply of gourmet flavor when other garden crops have faded.

Specifications

Plant Name: American Flag Leek (Allium ampeloprasum)
Cultivar Type: Heirloom, Open-Pollinated
Plant Class: Allium Vegetable (Biennial grown as Annual)
Color: Creamy white shank with dark blue-green foliage
Plant Characteristics: Long thick stems, non-bulbing habit, broad upright leaves, tender mild flesh
Suitable Space: Deep vegetable beds, raised beds, trench plantings, garden rows
Season: Cool Season (Late Summer through Winter)
Best Time for Sowing (Zone 6b): Start indoors late February to March (8–10 weeks before last spring frost); transplant outdoors late April to May; or direct sow outdoors early May.
Sunlight: Full Sun (6+ hours direct sunlight daily)
Watering Needs: Moderate (requires consistent moisture, rich soil, hill blanching for long white stems)
Read more less

What is included?

Contains about 1 gram of seeds

Check out the growing specs for the specific organic heirloom seeds you bought.

Good to know

Exceptional cold hardiness; can overwinter in garden beds for early spring digging
Mild, delicate, sweet onion flavor highly sought after for gourmet cooking
Heavy yields of thick, uniform stems with high resistance to bolting

Requires a long growing season (100–120 days) to reach full size
Needs regular hilling or soil trenching to blanch long, tender white shanks

Gift tip for your lover, family, friend, or colleague

A thoughtful gift for gardeners of all skill levels—whether they're seasoned green thumbs or just getting started.

Let your friends discover their own gardening style. Perfect for birthdays, housewarming celebrations, or any occasion that calls for something meaningful and unique. A gift that grows with them.

Consider our Gift Card as the ultimate flexible option. Let them choose exactly what they need—flowers, verggies or herbs—and start their gardening journey their way.

Gift cards are delivered electronically via email. Please check your spam folder if you don't see it in your inbox.