Black Oil Sunflower 40 lbs. – Minnesota’s Most Popular Wild Bird Seed

Few bird seeds attract as many species—or as much attention—as
Black Oil Sunflower SeedBlack Oil Sunflower 40 lbs..
Known for its thin shell, high oil content, and excellent nutrition,
it’s the go-to feed for anyone who wants to see cardinals, finches,
woodpeckers, and chickadees crowding their feeders.

Martie’s Feed and Seed
,
our Black Oil Sunflower 40 lb bags have earned a loyal following
across Central Minnesota. Whether you feed birds year-round or just through
winter, this seed offers unbeatable value and performance.

What Is Black Oil Sunflower 40 lbs.?

Black Oil Sunflower (often called BOS) is a smaller, thinner-shelled version
of the standard gray-striped sunflower seed. Its kernel is packed with
nutritious oil, protein, and calories that birds need for energy and feather
health. The thin shell makes it easy for even small birds to crack and eat.

• High in oil = high energy for winter feeding
• Thin shells = easy access for small birds
• Natural vitamin E and healthy fats support feather shine
• Affordable, clean, and easy to pour into feeders

Why Choose the Black Oil Sunflower 40 lbs.?

Buying a 40 lb bag saves time and money. Frequent refilling of
small bags can get expensive, and bulk packaging ensures consistent quality.
At Martie’s, we keep our seed fresh by rotating inventory often and storing
it in temperature-controlled conditions—so you always get a clean, aromatic
seed birds can’t resist.

We recommend the 40-lb size for:

• Large platform or tube feeders
• Multi-feeder yards and neighborhood birders
• Wildlife feeding stations and acreage owners
• Winter stocking for cold-weather energy needs

Bird Species That Love Black Oil Sunflower Seed

Nearly every seed-eating bird will visit a feeder filled with Black Oil
Sunflower seed. Expect daily traffic from:

• Northern Cardinals
• Chickadees & Nuthatches
• American Goldfinches & Purple Finches
• Downy and Hairy Woodpeckers
• Blue Jays & Grosbeaks
• Even occasional migrating sparrows and juncos

Because this seed provides such a dense source of calories, it’s ideal for
Minnesota winters when natural food is limited. Birds learn
to rely on steady feeders, and you’ll notice repeat visitors within days.

No Fillers, No Dust, Just Premium Seed

Every bag of Black Oil Sunflower Seed we sell is
100 percent pure—no cracked corn or grain fillers. We screen out dust and
debris so it flows smoothly through your feeders and leaves less waste on
the ground. Clean seed not only keeps your yard tidy but also discourages
pests and mold buildup under feeders.

How to Use and Store Black Oil Sunflower Seed

Feeders: Works well in hopper, platform, tube, or mesh
feeders. Use a weather-guard top or roof to keep seed dry.

Storage: Keep seed in a cool, dry place.
Reseal tightly after each use—especially during humid summer months.

Tip: Mix a small amount of coarse sunflower hearts or
peanuts to attract even more diversity without increasing mess.

Why Buy Local in Monticello & Elk River MN

Buying from
Martie’s Feed and Seed

means you’re supporting a Minnesota business that understands local wildlife.
Our team tests every batch for freshness, offers advice on feeder placement,
and provides lawn and habitat solutions for homeowners who care about
quality seed and healthy soil.

Seasonal Feeding Tips

• Fall: Stock up early—birds increase feeding before migration.
• Winter: Keep feeders full; high-oil seeds prevent freezing fatigue.
• Spring: Support nesting birds with consistent seed supply.
• Summer: Move feeders to shaded areas and clean weekly.

For Deer and Habitat Questions

If you’re also managing acreage for deer, browse our partner site

WhitetailPlans.com

for expert guidance on food plots, access trails, and habitat design.

Shop Black Oil Sunflower Seed Today

Stop by Martie’s Feed and Seed at 100 Dundas Rd in Monticello MN or
visit our
online store

to pick up your Black Oil Sunflower 40 lb bag.
We also carry suet, peanuts, and seasonal blends to complement your feeders.

Martie’s Feed and Seed – your local source for premium bird seed,
lawn fertilizer, and wildlife products in Central Minnesota.

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