Name: 500 seeds copra onion seeds
Brand: Shanghai Touchhealthy seeds shop
SKU: 00735
Price: 0.49 USD
Availability: InStock

500 seeds copra onion seeds

No.00735

High‑germination Copra F1‑hybrid long‑day yellow onion seeds, tight golden globe‑shaped bulbs, thin‑neck excellent long‑time storage property, suitable for home‑garden, pots and large‑scale farm planting

$0.49

Description

Our premium Copra onion seeds are strictly hand‑screened to filter out shrivelled, broken, mould‑damaged and non‑viable grains. Copra is the well‑known high‑quality F1‑hybrid long‑day yellow‑onion variety, famous for outstanding long‑term storage capability.

It grows neat round golden‑yellow bulbs with narrow slim necks and compact layered flesh. The flesh carries moderate sharp‑spicy flavour and turns soft sweet after heating. This hardy allium crop adapts well to indoor seedling trays, balcony containers, backyard garden beds and commercial farm‑field cultivation, widely used for daily cooking, slow‑cooked soup, roasting and pickled onion making.

Main Features

Carefully‑picked qualified hybrid seeds with stable germination rate and neat, vigorous grass‑like seedlings
Long‑day mature‑type, full harvesting cycle around 100‑104 days after sowing
Uniform globe‑shaped golden‑brown bulb, slim dried‑up neck, compact multi‑layer flesh structure
Top‑tier storage‑resistant trait, properly‑cured bulbs can stay fresh for 8‑10 months without sprouting or rotting
Strong adaptability for multiple soil types, decent tolerance against common onion fungal diseases
Small‑pack home‑gardening packages and bulk‑order seeds for commercial vegetable farms are both available

Planting Guide

Best Sowing Season
Sow seeds indoors 8‑10 weeks before the last spring frost; direct outdoor sowing works in early‑spring. Optimal germination temperature ranges 10℃‑25℃. It belongs to long‑day onion strain and suits northern‑latitude planting.
Seed Pre‑treatment
Soak seeds in room‑temperature clean water for 3‑4 hours, discard floating inactive seeds, then place healthy seeds on damp cloth for accelerating sprouting.
Planting Soil
Choose loose, fertile, fast‑draining sandy‑loam soil mixed with organic compost. Onions own shallow root systems, keep top‑layer soil loose and avoid water‑logged low‑lying ground.
Sowing Method
Bury seeds 0.5‑1 cm deep. Thin crowded seedlings and reserve 10‑12‑centimetre spacing between mature bulbs, leave wider row gaps for air circulation.
Germination Cycle
Keep planting substrate evenly moist. Healthy Copra onion seeds germinate within 6‑12 days under suitable‑temperature conditions. Clear away weeds regularly during the seedling stage.
Daily Care and Harvest
Provide full‑sunlight exposure every day, maintain steady soil moisture during bulb swelling phase. Gradually cut down watering once green leaves begin to bend over. Pull out bulbs, dry and cure thoroughly for long‑time storage.

Seed Storage Instruction

Store leftover Copra onion seeds inside cool, dry, shaded and well‑ventilated spots. Keep seeds away from high‑heat surroundings, humid air and direct strong sunlight to preserve seed‑germination vitality. Onion‑seed service life lasts roughly one year.

Basic Plant Information

Botanical Name: Allium cepa (Copra F1‑Hybrid)
Plant Family: Amaryllidaceae
Sun Requirement: Full sunlight
Suitable Soil: Fertile loose well‑drained sandy loam soil
Growth Trait: Long‑day annual storage‑type yellow bulb onion

FAQ

How long do Copra onion seeds take to germinate
After soaking pretreatment, viable seeds sprout within 6‑12 days in moist loose soil with proper temperature.
What makes Copra onion well‑suited for long‑term storage
Its narrow thin neck, thick papery golden‑brown outer skin and compact low‑moisture flesh slow‑down sprouting and rot after harvest‑time curing.
Is Copra a long‑day onion variety
Yes, it is a classic long‑day onion, it forms plump bulbs when daylight hours get longer, and it fits spring‑season sowing.