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Onion Seeds (Short Day) - White Grano HEIRLOOM

Buy Onion Seeds by the Packet or in Bulk

Unit Size Unit Price Savings Qty
Packet $3.95
1 Ounce $14.95
1/4 Pound $34.95 42%
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  • Classic white onion with low pungency
  • Great yield with large bulbs
  • Prefers full sun exposure

Product Description

Grow Heirloom Onions - Plant White Grano Onion Seeds

White Grano onions are your classic, mild flavored white onions. Your White Grano Onion plants will heartily produce large bulbs with low pungency. They are perfect onions for salads or cooking and are suitable for short term storage. White Grano Onion plants are short-day onions that are tolerant to Pink Root. Order your White Grano Onion Seeds today, and be dining on them in only 100 days!

  • Fast Facts

    Name:Onion Seeds (Short Day) - White Grano
    Botanical Name:Allium cepa
    Life Cycle:Annual
    Light Requirement:Full Sun
    Planting Season:Cool Season
    Plant Type:Short Day
    Features:Heirloom, Deer Resistant, Container Garden
    Fruit Size:Up to 1lb
    Days to Maturity:90-120 Days
    Plant Spacing:2-6 inches
    Planting Depth:1/4 inch
    Sowing Method:Direct Sow, Start Indoors
    Cold Stratification:No
    Hardiness Zones:2, 3, 4, 5, 6, 7, 8, 9
    Ships:Year Round
  • Planting Instructions

    How to Grow White Grano Onions

    When to Plant Onion Seeds

    Growing onions from seed is a slightly different endeavor than growing from sets. Sets are more common, and produce a faster harvest, however there is significantly less variety available, and the harvest tends to be smaller, more susceptible to disease and do not store as well.

    Choose a variety of Onion that is best suited to your climate. Short Day onions are advised for southern climates, where they will grow through the cool Fall and Winter months and bulb production will be triggered when the days get longer in the summer. Long Day onions are best for northern climates, where they can enjoy the longer summer days necessary for them to form bulbs. Onions grown out of their ideal climate may never produce a useable, or good sized bulb.

    Where to Plant Onion Seeds

    Onion growers know that great onions come from well prepared soil. Onions need a sunny patch of fertile soil with good drainage. They prefer a pH of 6 to 7.5.

    How to Plant Onion Seeds

    For best results, onion seeds should be started indoors in flats and transplanted out of doors when seedlings are between 4-6 inches tall, taking care not to damage the roots. Onion seeds will germinate best in warm soil, between 68-75 degrees, with consistent moisture. 

    When setting seedlings, actual root depth will depend on the length of root, but usually between 1.5 and 2 inches, making sure that most of the white of the stem is planted along with the root. Seedlings should be set at least 2-3 inches apart.

    Onions will thrive in moderate temperatures with consistent moisture. It is important to not let your onion plot dry out completely, this could stunt or even completely stop growth.

    How to Harvest Onions

    When bulbs have started to "fatten up," gently pull them out of the ground. If your plants have started to bolt, harvest and use immediately.

    Download Printable Planting Guide

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