Storage Onions

Copra Onion Conventional & Pelleted

Copra Onion Conventional & Pelleted


104 days. Long-day variety. When all your other stored onions have turned to powder, you'll still be enjoying Copra. Our best storage onion and the unequaled leader in hard storage types. Adapted to long-day areas, it is a medium-sized, round, dark-yellow-skinned onion with ivory flesh. The thin necks dry quickly. In storage trials, Copra was as sound and flavorful in the spring as when freshly harvested in the fall. High in sugar and moderately pungent, Copra makes excellent French onion soup. HR. F. Long-day variety.

   Hybrid Variety
Approximately 200 seeds per gram.
  • ON547/S
  • 1 gram
  • $3.05

  • ON547/X
  • 250 seeds Pelleted
  • $4.65

  • ON547/P
  • 4 grams
  • $6.85

  • ON547/Y
  • 1000 seeds Pelleted
  • $8.85

  • ON547PL1
  • 5M seeds Pelleted
  • $25.25

  • ON547/B
  • 1 oz
  • $26.95

  • ON547PL2
  • 10M seeds Pelleted
  • $45.50

  • ON547C2
  • 1/4 lb
  • $90.60

  • ON547PL3
  • 50M seeds Pelleted
  • $197.50

  • ON547C3
  • 1 lb
  • $304.80
  • More Information
  • Customer Reviews (3)
Seed DepthSeed SpacingSoil Temp for Germ.Days to Germ.Thin Plants To Approximately 200 seeds per gram.
1/8-1/2″See Below55-75°F6-162-7″

Allium cepa: Onions are an important crop to year-round gardeners. Our goal is to offer the very best onion selections in every category.

CULTURE: Onions prefer light, sandy, loamy soils, so the most successful onions are grown in well-prepared, well-dug, and well-drained soil with plenty of added organic matter and lots of sunshine. Apply 1/4-1/2 cup of our complete fertilizer per 5 row feet, 1-2 inches below the transplant or seed. Sow 2-4 seeds per inch, in rows 12-24 inches apart. Thin bulbing onions to 5-7 inches between plants and bunching onions to 2 inches between plants. For transplants, sow up to 100 seeds in a sterile seedling mix in a 4-6 inch pot. Cover the seeds to a depth of 1/8 inch. Place in a warm location and keep moist. If the tops reach over 5 inches before you transplant, cut to 3 inches high. When planting out, take the clump and separate the grass-like seedlings and place in a shallow trench. Fill the trench around the seedlings and then water in well. Onion seedlings are tough and will perform amazingly well.
SWEET ONION SEEDS: Grown for the largest onions, often much less pungent than the long-keeping storage types. In the North, these types must be started in February for transplanting out April to early May. Adapted to 36-55° latitude, unless otherwise noted.
STORAGE ONION SEEDS: Seed-grown storage onions are good keepers. Direct seed mid April to early May. Adapted to 36-55° latitude, unless otherwise noted.
SCALLIONS/BUNCHING ONION SEED: Sow April to mid July. Maximum growth rate and high fertility levels are not as essential for scallions. Sowings in July will be harvestable in winter and spring.
LONG-DAY/SHORT-DAY: Onions are photoperiodic plants. They regulate their stages of growth by the duration of the light/dark cycle at the particular time of the year they are growing. The onion plant will make top growth until the critical light duration is reached, and bulbing begins. The amount of growth and development prior to bulbing will determine the bulb size. Long-day varieties need to be planted as early as possible in the spring to obtain sufficient growth prior to the longest day, when they begin to bulb. Short-day varieties need to be fall planted to obtain enough growth to make a large bulb earlier in the year when the days are shorter. The dividing line between short-day and long-day varieties is generally accepted as 36° latitude, roughly along the Kansas/Oklahoma border. Plant long-day varieties north of this line and short-day varieties south of it. Recent breeding efforts have developed day-neutral varieties. Day-neutral and intermediate-day onions can be grown successfully anywhere.
INSECT/PESTS: Because of their pungent odor, onions repel many pests and protect other garden vegetables. Onions are a valuable companion plant and should be integrated throughout the garden.
DISEASE: Most onion disease results from improper growing conditions. Practice strict sanitation procedures.
HARVEST: When the tops begin to dry out and are falling over, withhold watering if possible, so the bulbs mature in dry soil. After about half the tops have fallen, push over the remainder, wait about 1 week and harvest the bulbs. Spread the bulbs out in the sun and cover with a sheet or tarp at night to prevent dew from remoistening them. Cure them for a week or so to toughen the skins. Proper curing is essential to promote long storage. If weather is poor at this time, cure on the floor of the garage, barn, or house.
STORAGE: Keep onions in onion sacks so they get good ventilation, and hang sacks where air is dry and cool (55-65°F). Check sacks occasionally, and immediately remove any sprouting or rotting onions.
SEED SPECS: Minimum germination standard: 75%. Usual seed life: 1 year. Days to maturity are calculated from seeding date.
What is pelleted seed?
Seed that has been coated with a clay-based material to form a larger, round shape. This makes planting by hand or mechanical seeder easier and allows for more controlled sowing of small seeds such as carrots or lettuce. All pelleted seed has a National Organic Program (NOP) approved coating.

DM | Downy Mildew
F | Fusarium Wilt
PR | Pink Root
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Stores forever
Aug 3, 2015  |  By Kathy W.
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We've grown Copra for over 15 years, I think, in both Wisconsin and North Dakota. It seems to store forever - we still have a dozen in August from 2014! None spoiled or grew in storage this year, which we do just in our cool basement. It doesn't get too big for us, sort of a small-medium size. The leaves seem to fall a bit early which keeps the size down, I suppose. A very good onion.
Storage Onions
Jan 27, 2014  |  By Darlene Jacobson
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Can't wait to order more this year they are great tasting right along with the red bull storage onions.
Excellent flavorful storage onion
Dec 30, 2012  |  By Larry Dean Bailey
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Have grown Copra for several seasons an am pleased with the flavor and long storage that it has. Watch your calcium and P ratio to ensure you get a full bulb devlopment--need to do annual soil analysies to determine this!