Waltham 29 Broccoli Seeds

$2.29

A long-time favorite variety, Waltham 29 broccoli plants were first developed in 1950 by the University of Massachusetts research farm. Waltham 29 broccoli is a compact, robust, cold-resistant variety, growing 24-30 inches tall and producing green heads that are four to eight inches wide. Plants also produce some side shoots for continuous harvest.

- Latin Name: Brassica oleracea var. italica
- Days to Maturity: 85-90
- Life Cycle: Annual
- Start Indoors or Cold Frame: 4-6 weeks before final spring frost
- Planting Depth: 1 cm
- Days to Germination: 3-14
- Germination Optimal Soil Temperature: 25-30°C
- Seedlings Optminal Daytime Temperature: 15°C
- Transplant Seedlings: 30-45 cm apart
- Direct Sowing: From last spring frost until midsummer or 3 months before autumn frost
- Seed Spacing: 3-4 seeds every 30 cm
- Thinning Seedlings: Progressively until 30 cm apart
- Row Spacing: 45-60 cm
- Plant Height: 60-80 cm
- Harvest: Cut heads when 10-15 cm in diameter. Regularly harvest side shoots to encourage continued production. 
- Average Seeds Needed Per 10 m Row: 100
- Average Yield Per 10 m Row: 15-20 lb.

GROWING INSTRUCTIONS

Broccoli is a cold-hardy crop that does very well with spring and fall plantings. It is a nutritional powerhouse that requires attention and space, but the fresh florets are worth every bit of effort.

Start broccoli seeds indoors about 4-6 weeks before the last frost date. Use a seedling flat and a high-quality seed starting mix. Plant a few rows per flat, a couple seeds every 10 cm. A shallow depth of 1 cm is perfect for the small seeds. Bottom water, but don’t let the trays sit in standing water. Put the seeds in a warm place and provide plenty of light once the sprouts germinate.

Broccoli needs lots of nutrients to grow strong and produce hefty heads. When sprouts show their first true leaves, apply a weak dose of liquid fertilizer, like fish emulsion or compost tea.

Thin out sprouts when they start crowding, up to 30 cm. Transplant into a small pot if the flats are outgrown, but don’t be afraid to transplant into the garden 2-4 weeks before the last frost. Broccoli is quite hardy and will tolerate cold temperatures without a problem. After all, the sooner they make it to the garden, the quicker they can get established. But make sure to progressively harden them off first.

Slowly acclimate the young plants to the sun and outdoor elements. When ready to transplant, put them in their permanent places 30-60 cm apart. Allow space for the florets to grow tall and wide.

Broccoli can take anywhere from 50 to 90 days until harvest, depending on the variety. Fertile soil and regular feeding throughout the season will contribute to a faster growth rate, and ultimately improve the quality of the final product.

QUICK FACTS

- Native to the northern Mediterranean, broccoli was first cultivated in 600 BCE in ancient Roman times. The popularity of the vegetable had spread to most of Europe by the 1700s and was cultivated in America beginning in the 1800s.

- Broccoli is a cold-hardy vegetable, the best results are with spring and fall crops. They can still perform well in partial shade during the hot summer months. 

- The majority of broccoli cultivars can withstand frost, making them an ideal crop for colder conditions.

- Broccoli seeds will remain viable for 4 years if stored in a cool, dark place, ideally between 4 and 10⁰C. After that, the germination rate may start to go down. 

OUR SEED GUARANTEE

You know that a lush, fruitful garden needs good soil, frequent watering, and sunlight to grow, but it’s the seeds that really make the harvest.

Picked and bagged for 2023 the vast majority of our seeds have germination rates of over 85%. The seeds are all-natural, non-GMO, non-hybrid, untreated, and open-pollinated for seed saving.

We have put a lot of thoughts into the design and packaging of our seed packets. Our seeds are all carefully packed in food grade kraft paper/aluminium zipper lock bags, and then are shipped in eco-friendly padded mailers.

We heat-seal each of our seed packet for even more protection from moisture, odour and light, allowing you to store your seeds for up to 3x longer than paper or plastic. Plant them all, germinate some indoors, save some for next season - it’s up to you!

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Filter Reviews:
CD
01/11/2022
Carolyne D.
Canada Canada

I planted a couple of these seeds at the b...

I planted a couple of these seeds at the beginning of October. They have sprouted (in my greenhouse) and so far, doing ok. First time growing this and hoping it continues to do well over winter. They arrived in good time. Nice packaging too.

CH
11/10/2022
Cynthia H.
Canada Canada

Great product, can't wait to try it! :)

Great product, can't wait to try it! :)

MM
21/07/2021
Mireille M.

MK
20/06/2021
Misha K.

I had bought about 20 different variety of...

I had bought about 20 different variety of seeds, including Brocoli seeds. To my surprise, delivery took a bit longer than expected, but it was within the time frame set by the owner. I had reached out to the owner since there was no tracking number, and he was very sweet and understanding. When I received my package, I was so excited and to my surprise, Jean-Nicolas added extra seeds. The package also is eco-friendly. Thank you for everything!! I will be ordering again and I am really proud to support a local business. Keep it up!

MK
20/06/2021
Misha K.

I had bought about 20 different variety of...

I had bought about 20 different variety of seeds, including Brocoli seeds. To my surprise, delivery took a bit longer than expected, but it was within the time frame set by the owner. I had reached out to the owner since there was no tracking number, and he was very sweet and understanding. When I received my package, I was so excited and to my surprise, Jean-Nicolas added extra seeds. The package also is eco-friendly. Thank you for everything!! I will be ordering again and I am really proud to support a local business. Keep it up!