Seed Swaps

Broccoli 'Waltham'

Brassica oleracea (Italica Group)

  • 17 plantings
  • 5 available for swap
  • 1 wanted
  • 22 stashed

Waltham is a variety of Broccoli which is a member of the Mustard family. Its botanical name is Brassica oleracea (Italica Group) 'Waltham'. This variety is an Vegetable that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Waltham is known for growing to a height of approximately 75.0 cm (2.44 feet).

United States is believed to be where Waltham originates from.

Waltham Broccoli tends to need a moderate amount of maintenance, so ensuring that you are aware of the soil, sun, ph and water requirements for this plant is quite important to ensure you have a happy and healthy plant.

This variety plant info is provided by the myfolia gardener's wiki. All details about Waltham have been kindly provided by our members.

How to grow Waltham

  • Partial Sun

  • Medium

Try to plant in a location that enjoys partial sun and remember to water moderately. Waltham is generally regarded as a tender plant, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. The USDA Hardiness Zones typically associated with Waltham are Zone 3 and Zone 10. Waltham needs a loamy and sandy soil with a ph of 6.2 to 7.2 (weakly acidic soil to weakly alkaline soil).

Growing Waltham from seed

Try to aim for a seed spacing of at least 5.85 inches (15.0 cm) and sow at a depth of around 0.51 inches (1.3 cm). For optimal germination, soil temperature should be a minimum of 10°C / 50°F.

By our calculations, you should look at sowing Waltham about 42 days before your last frost date.

Transplanting Waltham

Waltham is tender, so ensure you wait until all danger of frost has passed in your area before considering planting outside.

Harvesting Waltham

Broccoli Waltham Etymology

Bred by the University of Massachusetts, Waltham Field Station, Waltham, MA around 1950.
It was named after the town Waltham, Massachusetts which was settled in 1636.