Most of the planting calls we get come in April. People walk out on the first warm Saturday of the year, look at a bare corner of the yard, and decide today is the day. We plant a lot of shrubs in spring and they do fine. But if you asked us when we would plant something in our own yards, the honest answer is right now, in the back half of September and through October.
The reason is underground, which is why it gets ignored. A shrub you set out in October spends the next several months doing nothing you can see and a great deal you cannot. Air temperatures drop and the top of the plant goes quiet. Soil holds its warmth much longer than air does, and roots keep growing in it. Walter Reeves puts the sweet spot for root growth at roughly 55 to 75 degrees, which in north Atlanta describes our soil for weeks after the first cool mornings arrive. By the time summer comes back around, a fall-planted shrub has had a head start that a spring-planted one never gets.
What that head start is actually worth
Water, mostly. A plant that went in last October has roots out past the edge of its original root ball by June. It can pull moisture from a wider volume of soil, so it rides out a dry August without much help. The same plant set out in April is still living off a root ball the size of the pot it came in, in Georgia clay, in ninety-five degree heat, and it needs a hose to survive. One planting date decides how much water that shrub asks of you for the next two summers.
That is the part we care about most. We are a fully electric crew, and we think about the resources a landscape consumes after we leave, not only the ones our equipment burns while we are there. A yard planted at the right time of year needs less irrigation, fewer replacements, and less intervention from us. It is the cheapest sustainability decision available to a homeowner, and it costs nothing but timing.
What goes in the ground this time of year
Trees and most shrubs are fair game. Evergreens are the ones worth moving on early. Leyland cypress, hollies, and anything else that keeps its foliage through winter will lose water to cold wind all season, and it needs roots in the ground before that starts. If you have been meaning to put in a screen along a property line, September and October are the window, not December.
Perennials go in now too. Day lilies and irises can be lifted and divided while the soil is still warm, and daffodil bulbs can be moved if you can remember where they were. Sod and fescue seed follow their own schedule, which we covered separately in our guides.
How we put a shrub in
The hole is wider than people expect and shallower than people expect. Two to three times the width of the root ball, dug out at the sides so new roots have loose soil to move into. Depth stays the same as the plant was growing in the pot or the field. Setting a plant an inch or two low seems harmless and is the most common way a shrub in our clay soil dies slowly over three years.
Before it goes in, look at the roots. A plant that has sat too long in its container will have roots circling the inside of the pot, and those roots keep circling after planting instead of heading out into the soil. If they are circling, we cut them. If the ball is badly bound, we leave the plant at the nursery.
Then mulch, backfill with the soil that came out of the hole rather than a bag of something else, and water it in to settle the soil against the roots. No fertilizer. A new plant does not need its top pushed into growth in October, and feeding it now works against the thing fall planting is good at. Fertilizer waits until spring.
The part that gets skipped
Watering. A new tree or shrub needs supplemental water for about two years, not two weeks, and fall planting does not change that. It changes how much. Through the fall, rain often covers it. Through the first summer, check it, and give it a long slow soak at the base rather than a quick pass with the hose. Water that runs off the surface or pools in the hole is doing nothing for the plant.
If you have irrigation, that first year is worth a look at how the heads are throwing. Most of the systems we inspect are watering pavement somewhere. We would rather fix that than add a zone.
A short window, and then it closes
First frost around here usually lands in mid-November. Planting after that is not fatal, but the soil cools, root growth slows, and the advantage shrinks week by week until you are effectively spring planting with worse weather. If there is a tree, a screen, or a bed you have been putting off, this is the six or seven weeks when the work pays you back the most.
We handle planting as part of our landscaping services, and it usually happens alongside something else, such as a bed being reshaped or drainage being corrected. If you want to walk the property with us and talk through what belongs where, get in touch. We would rather put the right plant in the right spot in October than replace the wrong one next August.
