Buartblack walnuts cracked open to show the kernels

Buartblack Walnut (Bundle of 2)

$69.99

Reliable shipping

Flexible returns

Pollination Plant two or more

Bloom group 4 of 7 (Mid)

See trees that will pollenize it

Ripening

Will it finish before your first hard freeze?

Check it on the Ripening Map (opens in a new tab)

At a glance: Buartblack Walnut is a walnut tree rated hardy to zone 3b in our ratings (winters to -35°F), and wind-pollinated with staggered male and female bloom, so plant two different trees.

Hardy to	Zone 3b to 8. The b means the warmer half of zone 3 only (winters to -35°F). Find your zone with our cold hardiness calculator.
Pollination	Heterodichogamous - Plant Two Different Trees. Bloom group 4 of 7 (mid), late spring to early summer here. Like all walnuts, these are wind-pollinated and each tree tends to shed pollen before or after its own female flowers open, so plant both seedlings and ideally a third walnut-family tree nearby. Black walnut, butternut, heartnut and buartnut can all cross where their bloom overlaps. Good partners we carry: Purvis English Walnut Seedling (Bundle of 2), Purvis Hardy English Walnut (Bundle of 2), Ultra Northern English Walnut (Bundle of 2), Black Walnut (Bundle of 3). Bloom group is our estimate from the variety's origin and relatives. Walnut & Heartnut Pollination Chart.
Good for	Pies and baking (6/10), edible nuts (6/10), wood (6/10). Scores are our own 1 to 10 ratings; 8 and up makes our Best Of lists.
Deer	A deer favorite. Fence it or cage it.
What you get	Bare root, 1-2 ft or 2-3 ft. Shipped or picked up in Missoula in spring, roots wrapped in moist sawdust. Guaranteed to bud out.

Genetic Background & Breeding Approach

These are two year old buartblack walnut seedlings that we have specifically bred more cold hardiness into through antifreeze selection, which is described elsewhere on the site. The parent of these seeds are 50% Black Walnut and 25% Butternut & 25% Heartnut, respectively. For more information on these particular genetics, see Oikos Tree Crops. Hardy to zone 3.

Tree Size & Growth

These trees are 1-4 ft. (see options below) and are currently going on their forth year. Very well established root system.

Questions we get about Buartblack Walnut

How cold hardy is Buartblack Walnut?

We rate Buartblack Walnut hardy to zone 3b, which means winters down to about -35°F. Our ratings come from real winters at our two Montana sites and from trusted growers across the North, not from a catalog average.

What is Buartblack Walnut good for?

Our top use scores for Buartblack Walnut are pies and baking (6/10), edible nuts (6/10), wood (6/10).

Will deer eat Buartblack Walnut?

Yes, deer love it. Protect Buartblack Walnut with a fence or a cage, especially while it is young.

What arrives, and when does Buartblack Walnut ship?

A dormant bare-root plant, roots wrapped in moist sawdust with a vapor barrier, shipped or picked up in Missoula in spring. Sizes offered: 1-2 ft or 2-3 ft. We guarantee our plants bud out. Stone fruits can be slow, so if one still has not budded out by August 15, write to us and we credit you for the following spring.

Pollination partners

Trees that will pollenize Buartblack Walnut

Like all walnuts, these are wind-pollinated and each tree tends to shed pollen before or after its own female flowers open, so plant both seedlings and ideally a third walnut-family tree nearby. Black walnut, butternut, heartnut and buartnut can all cross where their bloom overlaps.

Bloom group 4 of 7 (Mid)

Pollination Plant two or more

Pollen Not tested yet

5 trees we carry will pollenize it. 3 in stock now.