
Honeylocust
Gleditsia triacanthos
Low today, mostly grass pollen.
Last updated July 1, 2026
Grass pollen is the main driver in Flatbush today, sitting at a moderate level (3), while tree pollen has eased to low (2) and overall conditions register as moderate. The forecast points to a gradual decline in grass, holding at moderate tomorrow before settling to low (2) for the remainder of the five-day window. This fits the season: late June favors grass over trees, so the area's familiar Oak, Honeylocust, Plane, Elm, and Zelkova are now well past their spring peak and contributing little. Weed pollen, including ragweed, isn't reported here, though that typically becomes a factor later in summer and into fall. Overall, expect today's moderate grass levels to taper off in the days ahead.
Every dot is a tree near Flatbush, colored by how allergenic it is. Click one for its details, and zoom in for a closer look.
The local tree genera behind today's pollen near Flatbush. Each bar is that genus's share of the tree pollen.
730 pollen-relevant trees nearby drive today's tree-pollen reading.
Get to know the tree types growing around Flatbush: what each looks like, how allergenic it is, and when it blooms.

Honeylocust
Gleditsia triacanthos

London planetree
Platanus acerifolia

Callery pear
Pyrus calleryana

Sophora
Styphnolobium japonicum

Ginkgo
Ginkgo biloba

Pin oak
Quercus palustris

Green ash
Fraxinus pennsylvanica

Japanese zelkova
Zelkova serrata

American elm
Ulmus americana

Eastern redcedar
Juniperus virginiana

Kentucky coffeetree
Gymnocladus dioicus

Littleleaf linden
Tilia cordata

Chinese elm
Ulmus parvifolia

Leaf plum purple
Prunus cerasifera

American linden
Tilia americana

Cherry
Prunus