Onion Seeds (Short Day) - White Grano HEIRLOOM
- Short Day, White Onion; Medium bulb
- 100+ Days to Harvest
- Prefers full sun exposure
Availability & Turnaround Time
All seeds are shipped year-round, while flower bulbs are shipped on a seasonal basis. Typical turnaround times for in-stock items is between 2 – 5 business days.
| Category | Shipping Period |
|---|---|
| All Seeds: | |
| Zones 2 – 10 | Year-Round |
| Spring Planted Bulbs & Perennials (March - June): | |
| Zones 8 – 10 Pre-Orders | Mid March |
| Zones 7 Pre-Orders | Late March-Early April |
| Zones 6 Pre-Orders | Early-Mid April |
| Zones 5 Pre-Orders | Mid-Late April |
| Zones 2 – 4 Pre-Orders | Late April-Early May |
| All Zones Ship Until Inventory is Sold Out | May - June |
| Saffron Crocus & Bearded Iris (Late August - November): | |
| All Zones | Start Shipping late August |
| Fall Planted Bulbs & Perennials (September - January): | |
| Zones 2-4 Pre-Orders | Mid September |
| Zones 5 Pre-Orders | Mid-Late September |
| Zones 6 Pre-Orders | Late September |
| Zones 7 Pre-Orders | Late September - Early October |
| Zones 8-10 Pre-Orders | Early October |
| All Zones Ship Until Inventory is Sold Out | Mid October - January |
| NOTE: Amaryllis Bulbs, Hosta Roots, Lily Bulbs, Papaver Roots, Paperwhite Bulbs, Peony Roots & Siberian Iris Roots ship to ALL ZONES beginning in October. | |
We try our utmost to maintain reliable inventory of all products, and are very proud of our record in doing so. However, as we are a company engaged in what Mother Nature provides, we do sometimes experience shortages and crop failures beyond our control. If, for any reason, we are required to backorder any portion of your order, rest assured we will keep you apprised of updated shipping information and/or any other options that may satisfy your needs and wishes.
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!
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Fast Facts
Name: White Grano Onion Botanical Name: Allium cepa "White Grano" Type: Heirloom Short Day Onion Size at Maturity: Up to 1 Pound Days to Maturity: 100 Days Light Requirement: Full Sun Planting Time: Cool Season Sowing Method: Indoor Sow Planting Depth: 1/8" - 1/4" Plant Spacing: 5" - 6" Seeds per Pound: NA Hardiness Zones: All Ships: Year-round Average Seeds Per Packet: ~1/2 tsp -
Planting Instructions
How to Grow Onions from 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 trigged 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.
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. 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.
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.
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Onion Seeds (Short Day) - White Grano HEIRLOOM
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