🌿 Amaranth

Adaptable to many soils, but grows best in fertile, loose, well-drained loam or sandy loam with good aeration and organic matter. Avoid compacted or waterlogged sites; ensure drainage in containers (a well-draining standard potting mix amended with compost works well). Tolerates short periods of drought but responds to regular humidity and nitrogen-rich soils. Performs over a wide pH range (from slightly acidic to neutral), with optimal growth around pH ~6-7.5.

Renda-tail pigweed (Amaranthus spp.) is a warm-season annual best sown in warm, dry conditions. Sow directly in the ground after the last frost, once the soil has warmed up (approx. 18-21°C / 65-70°F). Prepare a fine, weed-free seedbed in full sun; sow very thinly and shallowly (from the surface to ~3 mm / 1/8 in deep), as small seeds germinate better in the light. Close the soil and keep it evenly moist until emergence (often 5 to 14 days in warm soils). Then thin out the seedlings by spacing them about 20 to 30 cm apart (or closer for harvesting young shoots). You can start the seeds indoors 2-4 weeks before the last frost in cell trays; transplant outdoors after hardening off, handling gently to avoid disturbing the roots. Grow in fertile, well-drained soil; water regularly during the establishment period, then as needed. To avoid unwanted propagation (this plant self-seeds easily), remove plants or seed heads before the seeds mature if you're growing it intentionally.

Fox-tailed pigweed (Amaranthus spp.) generally does well in average garden soils and often needs little or no fertilizer. If the soil is poor, incorporate compost or a light application of a balanced all-purpose fertilizer (e.g. 10-10-10) at planting time. During rapid vegetative growth, a light side-dressing or dilute liquid fertilizer can be applied every 4-6 weeks, but avoid high or frequent nitrogen applications, which encourage excessive leaf growth and weak stems, and can delay or reduce flowering and seedhead appearance. Stop supplementation once flowering has started. Wherever possible, base doses on a soil analysis and, in containers, use a low-dose diluted and balanced fertilizer rather than heavy granular applications.

To prevent the emergence of fox-tail pigweed (Amaranthus spp.), maintain a continuous layer of light-excluding mulch on bare soil: apply 50-100 mm (2-4 in.) of clean, seed-free organic mulch (e.g. shredded bark, wood chips, weed-seed-free straw) or use mulch-covered landscape fabric or opaque plastic. Keep the mulch intact and top it up as it decomposes or is disturbed; avoid bringing buried amaranth seeds to the surface when you top it up. Keep the mulch a few centimetres away from the stems and shoots of desired plants to reduce rot and rodent damage.

Recommended for windy areas