Marathon Hybrid Broccoli F1
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Marathon Hybrid Broccoli F1


Marathon Broccoli is a hybrid variety that is widely-adaptable in northern, intermediate and southern states. Exceptionally cold-tolerant with large, tight heads. Brassica oleracea var italica. 70 days to maturity.

100 seeds per packet


Be sure to check out our Broccoli Growing Guide for more tips & tricks on successfully growing broccoli at home.

Marathon Broccoli is a hybrid broccoli variety that is widely-adaptable and exceptionally cold-tolerant. This variety performs well when grown in the fall and early spring in northern, colder states. It also is a solid producer when overwintered throughout the fall and winter months in southern states. Grow it anywhere in the country with exceptional results!

Marathon Broccoli produces consistent yields of large broccoli heads early and later in the growing season. Broccoli heads are heavy and have a high dome, making them easier to harvest. The heads also have small, tight beads which makes them extremely palatable. This is a great variety for backyard gardeners or small-scale market farmers.

Broccoli may be direct-seeded, but it performs best when transplanted. Transplanting allows for more consistent plant spacing, and prevents broccoli seedlings from competing with weeds in the early stages of the plant. We recommend starting transplants 3-4 weeks before the desired outdoor planting date. Broccoli transplants grow great in our heavy-duty seed starting trays, where they develop a solid root ball with roots that are trained to grow downward. Plants are ready to go in the ground when they can be easily pulled from the cells in the seed starting tray.

Broccoli crowns should be harvested when they are dark green, before any flowers or Seeds develop on the crowns. As temperatures warm in the spring, broccoli crowns will mature faster and should be monitored. Although broccoli leaves are frost-tolerant, broccoli heads are not. If frost is imminent while crowns are developing, be sure to use some form of row cover to protect the crowns from frost.

Marathon Broccoli Planting Information

Planting Method: transplant

When to Plant: early spring and fall

Planting Depth: 1/4"

Seed Spacing: 12"

Row Spacing: 2-3'

Days to Maturity: 70

Disease Resistance: None

Customer Reviews

Based on 3 reviews
Stephen Griswold
Marathon Broccoli Vegetable

Excellent, excellent, excellent tasting broccoli!!! This vegetable will produce large broccoli flowers where only one flower head can fit in a ziplock gallon bag. I. AM. So. Impressed with this broccoli, and I'm very impressed with seeds sold by Hoss Tools all together. I live in middle Georgia outside Macon, Zone 8a. This plant took about 90 days to flower, and this plant is huge! It needs about 3 ft of diameter space to grow. I fed it compost soil with chicken manure six inches away from the stalk. The biggest problem with this vegetable is that nature loves it too. That includes cutter worms, snails, slugs, rabbits, deer, etc. You'll have to protect it diligently while growing it otherwise you won't be eating broccoli. I use a white screen mesh to cover the plant against deer and rabbits. Why Hoss Tools doesn't sell white screen meshes is a mystery to me. To me, it is a very convenient protection against wild animals because I don't want to fill their bellies with my hard work. Lastly, be patient while growing this wonderful vegetable.


Awesome seeds! Germinated in 3 days!

Antoinette Wilson-Rogers
5 out of 5

I love this site. You get tons of info on the product and fast shipping.