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Buckthorn
Rhamnus cathartica |
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Buckthorn is a shrub or a small tree growing up to 20-25' tall. It has gray
to brown bark and when cut it will reveal yellow sapwood and orange
heartwood. Twigs often end up to be small sharp spines. |
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Leaves: Leaves are oval with tiny
teeths and veins curving toward the tips. They will stay green very late
into fall. Flowers:
Small greenish yellow leaves will bloom in May and June.
Fruits & Seeds: Female
trees produce many clusters of round black pea-sized fruit.
Roots: Extensive fibrous root
system.
Ecological threats
 | Buckthorn invades forests,
woodlands, oak savannas, prairies, fields, and roadsides. |
| It leaves out very early, thus
blocking sunlight to lower plants and will keep leaves very late in the
season. |
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