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Waltham 29 Broccoli Seed-Broccoli-Heirloom Seed Supply

Waltham 29 Broccoli Seed

Regular price $2.75 $2.00 Sale

Our Waltham 29 Broccoli Seed is open pollinated and my all time favorite that I grow every year. Developed in 1951 and long considered the standard OP fall broccoli. We’ve found a reliable strain that consistently produces 6" heads with medium beads on attractive stocky 20" plants. Waltham delivers good-sized central heads but fewer side shoots.

150 seed per pack.  92% germination.

Days to maturity are from direct seeding. Subtract 20 days from date of transplanting.

Note: We cannot ship packets greater than ½ oz. (14 grams) of any Brassica into the Willamette Valley. The State of Oregon prohibits shipping any commercial quantity of untreated Brassica, Raphanus or Sinapis because of a quarantine to control Blackleg.

Broccoli Culture: Hardy. Require warm temperatures to germinate (68-86° ideal) but need 60s during seedling stage for optimal growth; higher temperatures make seedlings leggy. Heavy feeders; for best growth, need regular moisture and 2-3' spacing. Have done well for us succeeding onions and garlic in beds. Cauliflower and broccoli are damaged by hard frosts, especially in spring.