Seed Swaps

Amaranth 'Hartman's Giant'

Amaranthus cruentus

  • 2 plantings
  • 0 available for swap
  • 0 wanted
  • 3 stashed

Hartman's Giant is a popular variety of Amaranth, which belongs to the Amaranthus genus (Amaranthus cruentus 'Hartman's Giant'). It grows mainly as an Annual, which means it typically only grows best for a single growing season. Hartman's Giant normally reaches to a mature height of 3.90 feet (1.20 metres).

As Hartman's Giant Amaranth is a low maintanence plant, it is great for beginner gardeners and those that like gardens that don't need much overseeing.

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

How to grow Hartman's Giant

  • Full Sun

  • Medium

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Hartman's Giant is thought of as tender, so it is really important to ensure that the outside temperature is well above freezing before planting or moving outdoors. Ensure your soil has a ph of between 5.5 and 7.0 as Hartman's Giant is a weakly acidic soil - neutral soil loving plant.

Growing Hartman's Giant from seed

Soil temperature should be kept higher than 15°C / 59°F to ensure good germination.

By our calculations, you should look at sowing Hartman's Giant about 28 days before your last frost date.

Transplanting Hartman's Giant

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Hartman's Giant is a tender plant.

Harvesting Hartman's Giant