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Marathon Broccoli Seeds

Guarantee To Grow
Cold Tolerant
Suitable for all Regions
Marathon Broccoli
SKU: BR31-100
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Country Of Origin: USA USA
Availability: In stock
$3.00
Your price: $2.50
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Broccoli
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Non Treated Seeds
Non-GMO Variety

68 days. Brassica oleracea. (F1) Marathon Broccoli. (Formerly Premium Crop)The plant produces excellent yields of large blue green dome shaped broccoli. Great for fresh use in salads, steamed, and stir fry. It does well in the Northeast for late summer and fall crops and over the winter in Arizona, California, and Florida. Cold Tolerant. An excellent choice for home gardens and market growers. A variety from the USA. Disease Resistant: DM

 

Lot No: 101935

Germination: 85%

Test Date: 05/2025

 

Seeds Per Pound: 128,000

 

Plant Height: 24 to 30” tall

 

Planting Season: Spring/Fall

 

Sunlight Requirement: Full Sun

 

Planting Method: Indoor Sow/Direct Sow

Broccoli Brassica oleracea - Italica Group

 
Seed DepthSoil Temp. for GerminationDays to GerminationSunlight RequirementsPlanting Time
1/4 to 1/2"70 F to 85 F7 to 10 daysPartial Shade / Full SunSpring/Fall
USDA Hardiness ZoneSeed SpacingRow SpacingSpace After ThinningDays to Harvest
N/A3 to 4"24 - 36"18 to 24"55 - 85 days
Broccoli Planting Information:

Broccoli does best when temperatures remain between 40 F and 70 F during the growing period. Temperatures below 25 F can damage or kill broccoli. Spring planting should occur as soon as soil can be worked and after the last frost, and fall planting should be done 10 to 12 weeks before the first frost. In most areas, broccoli grows best if planted in late summer so it can mature during cool periods. Plants can grow 2 ft tall.

Soil Requirements:

Requires fertile soil in a well-drained location in the garden. Apply mulch, grass clippings, or straw around the base of the plant. 

Water Requirements:

Keep well watered or the plant will have premature heading and flowering.

Fertilizer Requirements:

Use Slow Release (6 Month) Fertilizer when transplanting outdoors. Apply Miracle Gro Liquid Fertilizer periodically.

Harvest Tips:

When you begin to see the buds spread out, it is time to harvest. Cut heads with a sharp knife.

Broccoli
Growing Calendar
Indoor Germination Temperature: 70 to 85 F
Minimum Outdoor Temperature: 40 to 70 F
Start Indoors Transplant Start Outdoors Start Indoors Fall Transplant Fall Start Outdoors Fall Multiple Crops
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Depth: ¼” to ½“
Days to Germination: 7 to 10 days
Plant Spacing: 18 to 24”
Row Spacing: 24 to 36”
Sunlight Requirement: Partial Shade/Full sun

Days to Harvest after Planting Outdoors: 55 to 85 days


USDA Hardiness Zone: 3 to 10

Use Miracle-Gro© Seed Starting Mix for best germination results.

DM – Downy Mildew

Scientific Name: Peronospora farinosa, Peronospora parasitica, Pseudoperonospora cubensis

Type: Fungus

Downy mildew is a fungal disease that affects the growth of beets, broccoli, cantaloupes & melons, cauliflower, cucumbers, spinach, Swiss chard, and watermelons. Downy Mildew is most serious for cucumbers, which can drop dead in a week and stop producing any fruit to harvest. The disease affects both seedlings and mature plants.The infected leaves are retarded in growth, turn yellow then brown, and turn downward. A white to gray color mold appears on the underside of the leaves. The leaves will wilt and eventually die. The disease can spread rapidly under favorable conditions and infect the entire field. The infected plants should be removed and burned to avoid further infestation. The disease is favorable when temperatures are 58-72 F and usually occur in early spring and autumn in cooler weather when moisture and humidity are very high. Fungicides can help manage the disease. Good air circulation and increasing space between the plants can help control and prevent the disease, so use wide plant spacing to promote drying of the leaves. The best option is to use disease resistant varieties.

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