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4504

Imperial Broccoli (F1 Hybrid 70 Days)

3 reviews

A variety for mid to late summer harvest, performing best with a long day length that is accompanied with moderate heat. A dependable choice for growing in the northeastern summers. Domed heads are dark green with small beads and have an excellent post-harvest shelf life. Handles heat stress well.

30 seeds

PLANTING

Brassica oleracea

Germination: 3-10 days

Germination Temperature: Optimum soil temperatures 65-85ºF.

Seed Sowing Depth: 1/4” deep

Starting Indoors: 4-6 weeks before the last frost. Sow 2-3 seeds per cell/pot. Thin to the strongest seedling. Fertilize the seedlings every 7-10 days with a liquid or water-soluble fertilizer, diluted to ¼ of the suggested measurement. Transplant a week or two before the last frost. Space 12-18" apart. Sow in early to midsummer for fall crops. 

Sowing Outdoors: Spring when the soil temperature reaches at least 55ºF. Sow 2-3 seeds every 12-18” apart. Thin to the strongest seedling per space. Sow in midsummer for fall crops. Germination is slower at lower soil temperatures.

Harvest: Pick when heads are tight before flower buds start to open. For varieties that produce side shoots keep picked for a longer production

Tips: Provide fertile soil, rich in organic matter from the very beginning of its growth in the garden. Give adequate, even moisture for the best growth. Mulching helps retain moisture.

 

Customer Reviews

Based on 3 reviews Write a review
Customer Reviews
5.0 Based on 3 Reviews
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  • March 6
  • cabbage moths
  • Mar 6th
  • covers
  • broccoli seeds
  • damage
  • height
  • beds
  • maturity
  • temps
LE
07/11/2020
Linda E.
United States United States
I recommend this product
First time broccoli

It was so easy to order and the seeds arrived in almost no time. Some of the broccoli seeds were started inside in March (March 6) due to our very short growing season. Some of the seeds were direct planted in the raised beds when the temps were appropriate (Mar 6th). The plants have reached the same height and maturity at this time. Small clusters of broccoli are almost ready for harvest. I grow these plants under very light covers to keep the cabbage moths and cabbage loopers off the plants and have had no problems. I removed the covers about two weeks ago and still have no damage to the plants. These are strong and healthy plants.

KO
01/23/2018
kathaleen o.
United States
pINE TREE bROCOLLI

THIS WAS A YEAR AGO, IMPERIAL WAS OKAY BUT WE PREFER wALTHAM

N
01/21/2017
Nan
Excellent broccoli

Great producer in northern Colorado.