Live Oak Tree Leaf Identification: Evergreen, Unlobed

A southern live oak leaf is small, stiff, unlobed and usually smooth-edged: NC State Extension records 2-5 inches long and 0.8-1.5 inches wide, shiny dark green above and pale with gray matted hairs beneath. SP Tree Farm adds that the edges are slightly rolled under and the leaves feel stiff. That leaf looks nothing like the deeply lobed oak leaf most people picture, which is why live oaks are often not recognized as oaks at all.

Two cautions from NC State: leaves on juvenile shoots and sprouts can carry teeth, and the leaf shape runs from rounded to oblong to elliptic-obovate, so gather several leaves from mature branches before judging.

Four checks together identify a southern live oak:

• Green in winter. NC State Extension describes it as a broadleaf evergreen that keeps its leaves until new growth emerges; SP Tree Farm calls it semi-deciduous because the old leaves drop as the new ones come. A deciduous oak is bare from late fall to spring.
• The leaf described above. Small, stiff, unlobed, gray-hairy beneath.
• Acorns. 0.75-1 inch, egg-shaped, often dark brown to black, with a bowl-shaped cap covering about a third of the nut, on long stalks singly or in clusters of up to five, ripening in a single season (NC State; SP Tree Farm counts 3-5 per cluster).
• Shape. A short trunk and huge horizontal limbs: 40-80 feet tall but 30-100 feet wide (NC State), with historic trees spreading more than 150 feet (SP Tree Farm).

If the tree is in California rather than the Southeast, see the coast live oak section below.

'Live oak' is a common name shared by several evergreen oaks. On the West Coast the usual one is coast live oak, Quercus agrifolia. Wikipedia describes it this way:

• Leaves 3/4 to 2 3/4 inches long, broadly oval and strongly convex (cupped), with spiny teeth where the side veins end, hairless or with small tufts of hair under the leaf where veins meet.
• Acorns 3/4 to 1 1/2 inches, slender and reddish-brown, maturing in 7-8 months, unusually fast for a red-group oak.
• Bark gray to dark brown or black with broad rounded ridges on mature trees.
• Size and range 33-82 feet tall, west of the Sierra Nevada from Mendocino County to northern Baja California.

So a California live oak leaf is cupped and prickly, while a southern live oak leaf is flat to slightly rolled and usually smooth.

In California the question is usually live oak or valley oak, Quercus lobata. Wikipedia separates them clearly:

• Leaf fall. Valley oak is deciduous and bare in winter; coast and interior live oaks are evergreen.
• Leaf shape. Valley oak leaves are 2-4 inches, deeply and roundly lobed, matte green above and velvety; live oak leaves are unlobed.
• Acorns. Valley oak acorns are long, 3-5 cm, ripening October to November in one season.
• Size and site. Valley oaks are among the largest North American oaks, sometimes over 100 feet (the tallest measured 153 feet), and prefer valley floors and streamsides below 2,000 feet rather than hillsides.
• Bark. Valley oak has pewter-colored, rippled, deeply furrowed bark.

Most oaks are sorted by leaf lobes first: rounded lobes point to the white oak group, bristle-tipped lobes to the red oak group, as our oak tree identification guide explains. Live oaks break that rule because their leaves have no lobes, so for them the useful checks are evergreen leaves, leaf edge (smooth on southern live oak, spiny on coast live oak), the underside hairs and the acorn. NC State lists sand live oak (Quercus geminata), Darlington oak (Q. hemisphaerica), water oak (Q. nigra) and willow oak (Q. phellos) as similar species to southern live oak; for any of these, a photo of the acorn and cap together is worth more than a leaf alone. For the species with lobed leaves, see northern red oak and black oak.

Photograph a leaf upper side and underside next to a ruler, a twig with several leaves, any acorns with their caps, the bark at chest height, and the whole tree from a distance to show the spreading form. In winter, the fact that it still has green leaves is itself part of the evidence. NatureLens can suggest the species from those photos (free scans every day).

Research and drafting for this page used AI assistance. Every measurement, date, price and claim was then checked against the sources listed below, which were opened and read on 2026-09-25. Where two sources give different numbers, both are shown.