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Cultivating Gardeners
Home FLOWERS & HERBS Mongolian Giant Sunflower Seed

MONGOLIAN GIANT

MONGOLIAN GIANT

Enormous, vibrant yellow flower heads span 18 inches across, towering up to 14 feet tall. Once the blooms fade, you’ll be rewarded with bushels of edible, huge, 1 ½ inch long seeds. Approximately 10–12 seeds per gram.

  • Key Features:

SEED

$4.15

$4.15

  • Key Features:

Customer Reviews

Based on 3 reviews
33%
(1)
0%
(0)
0%
(0)
0%
(0)
67%
(2)
M
M K.I.
Doing Great so Far.

So far 8 out of 10 germinated. Lost one to slugs. The rest are doing great

E
Elliot G.
Bummer: no germination

none of the seeds germinated (as previously noted); you indicated a credit or will be replaced withnest season seeds.

So sorry to hear that! We do germ test all of our seeds and to ensure we sell only top performing crops, we have established germination standards that are higher than prescribed by the Federal Seed Act. Our minimum germination standard for sunflowers is 70% and the most recent test for this variety passed at 92%. As always, our products are backed by our full guarantee. We want you, our customers, to be 100% satisfied with the seed, plants and supplies that you purchase from us. If anything you buy from Territorial proves to be unsatisfactory, we will either replace the item (if available) or refund the purchase price, whichever you prefer (for up to 1 year from purchase). You can also reach out to us for any troubleshooting! Contact our customer service (Monday-Friday 8AM-5PM Pacific Time) at either 800-626-0866 or info@territorialseed.com

B
Bhity
Disappointment

These seeds did not germinate at all when planted directly in the soil.

So sorry to hear that! We do germ test all of our seeds and to ensure we sell only top performing crops, we have established germination standards that are higher than prescribed by the Federal Seed Act. Our minimum germination standard for sunflowers is 70% and the most recent test for this variety passed at 92%. As always, our products are backed by our full guarantee. We want you, our customers, to be 100% satisfied with the seed, plants and supplies that you purchase from us. If anything you buy from Territorial proves to be unsatisfactory, we will either replace the item (if available) or refund the purchase price, whichever you prefer (for up to 1 year from purchase). You can also reach out to us for any troubleshooting! Contact our customer service (Monday-Friday 8AM-5PM Pacific Time) at either 800-626-0866 or info@territorialseed.com

Soil Temp for Germ 60–75°F
Seed Depth ½"
Seed Spacing 3–4"
Days to Emergence 7–14
Thin Plants to 12–18"
Row Spacing 30"

Helianthus annuus

Germination Codes
Given at the end of each description to give you specific information.
(1) Germination occurs between 70-85°F and within 6-15 days. Sow indoors and cover lightly.
(2) Needs a period of pre-chilling. Mix seeds with moistened peat moss and place in plastic bag. Seal and place bag in an area where the temperature is around 60°F for 2-3 days. Then place in the refrigerator for 30-90 days. After pre-chilling, place seed on sterile seedling mix and cover lightly. Germination may take up to 30 days.
(3) Needs darkness to germinate. Remove cover as soon as germination occurs.
(4) Direct sow in the garden as soon as the soil warms to at least 55°F.
(5) Germination may be slow and erratic. A fluctuating temperature of 75°F during the day and 50°F at night may help.
(6) Needs at least 12 hours of light per day to germinate. Press into the medium but do not cover. Keep moist.
Note: For those varieties that indicate a (1) or (6), a very light covering of vermiculite will allow adequate light to the seed and keep it uniformly moist.

Direct Sowing
• To promote deep roots and strong stems, water deeply but infrequently
• One to two cups of TSC's Complete fertilizer per 10 row feet in the spring is adequate for the year
• Germination code: (4)

Insects & Diseases
• Common insects: Cutworms and weevils
• Insect control: Pyrethrin
• Common pests: Birds
• Pest control: BirdBlock Netting or flash tape
• Note: Avoid wetting foliage to prevent rust

Harvest & Storage
• Cut flowers in the morning just after they open
• Use a clean knife, a clean vase, and a few drops of chlorine bleach in the water
• Cutting the mature central flower head will promote side-shoot flower production
• Harvest the heads when the bracts begin to shrivel, and hang the flowers upside down in a barn or shed
• For seed-eating gardeners, gray and white striped sunflower seeds are the best choice
• Salting: When dry, rub the seeds off the heads and soak overnight in 1 gallon of water with 1 cup of salt added, drain, and dry in a 250°F oven for 4-5 hours and store in an airtight container

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