Audubon® Blackjack Oak
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You can bet on Blackjack Oak to be a hit with your backyard birds! This small to medium-sized shade tree (much smaller than other Oaks) has much to offer your avian friends. Its dense, twiggy canopy provides a safe space for songbirds to nest in. The tree also holds on to its dry leaves in winter, giving birds protection while roosting during the dormant season. Most importantly Blackjack Oak serves up a buffet of nutritious insects to hungry birds. Caterpillars, especially, are critical to many birds’ diets, and Blackjack Oak has these in spades. Jackpot!
May Benefit & Attract: cardinals & grosbeaks, wrens, woodpeckers, sparrows, thrushes, orioles, waxwings, nuthatches, finches, mockingbirds & thrashers, crows & jays, vireos
Take Birds Under Your Wing
New! Introducing our bird-friendly collection of Audubon® Native Plants & Trees
- Better for Birds, 100% Neonic-Free
- Not Available in non-native regions, states or counties (see Native Regions map)
Bower & Branch is proud to grow Audubon® Native Plants for Birds in partnership with the National Audubon Society to help birds and other wildlife thrive.
- The National Audubon Society protects birds and the places they need, today and tomorrow
- This bird-friendly native plant provides food and shelter for local and migrating birds and other wildlife
- Your purchase and planting of this native flora directly supports Audubon’s conservation mission and impact
- Learn how you can help birds in your home and community through Audubon’s Plants for Birds program
- Audubon Native Plants & Trees are free of neonicotinoids and exclusively grown by Bower & Branch
Audubon® is a licensed and registered trademark of the National Audubon Society. All rights reserved.
Size AA (2-3' tall) container grown
- Hardiness Zone: 6-9
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Recommended by Our Growers
Blackjack Oak is a fighter, a scrappy little tree that toughs it out in the worst situations. It grows on the poorest, driest, rockiest, sandiest sites over much of the eastern U.S., in a range that stretches from New Jersey to North Florida and west to Kansas and Texas. In these challenging sites, it will often grow no taller than 20 feet! When given some love, it develops into a taller, more symmetrical, more graceful specimen, though growth is still quite slow. Because of its pokey growth, very few nurseries are willing to take the time to produce it. We are so happy to be able to offer it!
Many Oaks don’t offer much in the way of fall color, but Blackjack Oak is generally pretty colorful. Most trees develop nice amber-gold, orange, or rusty-red tones when the days get chilly. It is colorful in spring, too, when the new leaves emerge with a pink cast.
How to Grow
Plant your Blackjack Oak in an area that will receive full sun—this tree does not like shade at all. It also struggles in alkaline soils, and the leaves will become chlorotic (yellow) there. Choose this tree only if your soil is naturally acidic. Good drainage is important as well. If your soil stays soggy after a rain, you should select another type of Oak, such as Swamp White Oak or Overcup Oak. Little pruning will be necessary, but if you must prune, do so only between December and February. The fungal disease Oak Wilt can strike when Oaks are pruned during active growth.
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