The common globe amaranth
is easy to grow from seed, although seedlings can also be purchased as bedding plants
. Seeds can be sown directly into the garden after your last frost, or in seed trays indoors to give your plants
a head start.
Sowing seeds indoors: Sow seeds 6-8 weeks before your last frost, 6 mm deep in a seed tray. Once seedlings emerge in 2 weeks, they will need to be kept on a sunny windowsill. Seedlings will need at least 2 sets of true leaves before they can be planted in the garden, and should also be hardened off first.
Sowing seeds in the garden: Wait until there is no more danger of frost and sow seeds in a sunny location in well-drained soil, 6 mm deep. Once seedlings reach 2.5 to 5 cm in height, thin so that they are around 25 cm apart.
Planting in the garden: Choose a sunny location in your garden and plant
on a cloudy day or in the evening, to prevent transplant shock. Dig a hole large enough for your plant
's root ball, and then gently place your plant
in. Fill in and firm the soil down, watering thoroughly afterwards. Applying a light mulch will help to retain moisture and prevent weeds. Leave around 18 to 30 cm between each plant