Farmington Valley Leaf-Drop Calendar: Which Trees Let Go When

Short version: In the Farmington Valley, the leaf drop comes in waves. Black walnut, ash and birch let go first in late September and October. Red and sugar maples peak from mid-October into the first week of November. Norway maples tend to drop late and all at once in mid-November. Oaks come last, shedding slowly from late October into December, and some hold dead leaves until spring. For most Farmington yards that means a main cleanup in early November and, under oaks, a second pass before the first lasting snow.

“When should I schedule the leaves?” is the question we hear most every fall. The honest answer depends on what’s growing over your yard. Here’s the typical sequence we see across Farmington and Unionville, and what it means for your planning.

Wave 1: Late September through mid-October

• Black walnut. Usually the first to go, often dropping leaflets (and walnuts) before most trees have even colored.
• Ash. Ash leaves yellow or purple and fall early and fast. Many ash trees in Connecticut have been hit by emerald ash borer, and dead or declining ash are worth having an arborist look at.
• Birch and cherry. Early to color, early to drop, and light enough to mulch-mow in most yards.

For most properties this first wave is light. Mulching it into the lawn on a regular mowing day usually handles it.

Wave 2: Mid-October to early November

• Red maple. The brilliant red trees in yards and along wet ground near the Farmington and Pequabuck rivers.
• Sugar maple. The big orange-and-gold shade trees along many of Farmington’s older streets. A single mature sugar maple can bury a typical house lot.
• Tulip tree, hickory and others fill in around the same time.

This is the heavy wave. For many Farmington yards, the bulk of the season’s leaves hit the ground in a two- to three-week window, usually peaking around the end of October and the first days of November.

Wave 3: Mid-November

• Norway maple. A non-native maple planted widely as a street and yard tree. Its leaves stay green well after native maples have dropped, then often come down in a rush after the first hard freeze.
• Callery (Bradford) pear and some ornamentals also hang on late.

Wave 4: Late November into December (and beyond)

• Oaks. Red, white, black and pin oaks are common in Unionville, Devonwood, Coppermine and the wooded neighborhoods near Talcott Mountain. They drop gradually for weeks. Many young and lower-branch oaks also show marcescence: the leaves die and turn brown but stay attached, falling a few at a time with each windy day, sometimes until new buds push them off in April.
• American beech. Also marcescent. Those pale, papery leaves you see in the woods in February are beech.

What changes the timing from year to year

• Early cold. A hard freeze in late October can trigger a sudden drop, especially from Norway maples.
• Drought. Dry late summers can stress trees into coloring and dropping early, sometimes with duller color.
• Wind and rain. One November nor’easter can strip a neighborhood in a single night.
• Your microclimate. Low spots along the river valley and shaded north slopes can lag or lead the rest of town by a week or more.

How to use this to plan

1. Look up. Walk the yard in mid-October and identify your big trees. Mostly maples? Mostly oaks? A mix?
2. Maples and birch only: plan one main cleanup in the first half of November, after the sugar maples are bare.
3. Oaks or Norway maples overhead: plan two. One in early November for the maple wave, and a final pass in late November or early December.
4. Don’t wait for the very last leaf. A thick layer sitting on the lawn for more than a couple of weeks starts doing damage. Clear what’s down, and come back for the rest.
5. Watch the calendar. If you rely on the town’s loose-leaf vacuum collection, the final round typically wraps up in early December. Our Farmington leaf pickup guide has the details.

Let us handle the timing

Scheduling around the leaf drop is a big part of what we do. Many of our Farmington customers book a fall cleanup in early November and a quick leaf-only visit after the oaks finish. If you’d like help figuring out the right plan for your trees, request a free estimate or give us a call.

Note: Timing described here reflects typical patterns for central Connecticut and the Farmington Valley; any given year can run a week or more early or late depending on weather. For tree health questions, including ash trees affected by emerald ash borer, consult a licensed arborist.