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Seasons

The spring garden is decided in September

A mature designed landscape in Wilson County, Middle Tennessee, in low autumn lightSeasons
Published
Written by
Clare Horne
Ground
Middle Tennessee
Reading time
8 min

8–9

Months of root growth a fall-planted tree gets before its first July

2026

Published

Why fall is the true beginning of the garden year in Middle Tennessee, and when to start a commission if you want to be living in your garden by spring.

The red maples on my farm turn first. Every year, sometime in the middle of September, weeks before anyone is ready to admit summer is over, a single branch goes red like a struck match. Nobody else notices. Pool floats are still out. The county fair just finished. But the maples know, and once you have lived with a piece of land long enough, you know too: the year has turned, and the real work is about to begin.

Here is the thing almost nobody in my industry will say plainly. Everyone believes the garden year begins in spring. It does not. Spring is when gardens are photographed. Gardens are made in the fall.

Spring is the marketing season. Fall is the planting season.

Every March, the same thing happens. The weather breaks, the daffodils come up, the garden centers fill their lots, and my inbox fills with people who have just walked outside, looked around, and decided this is the year. I understand it completely. Spring is persuasive. Spring is the land's own advertising campaign.

But spring planting is an industry convenience, not a horticultural one. It exists because that is when the nursery trucks arrive, when landscape crews mobilize, when homeowners feel the itch. The entire machine is built around the moment you feel motivated, not the moment the plants actually want to go in the ground.

Why fall planting wins in Tennessee clay.

In October, our clay soil is still holding the warmth of the whole summer. The air has cooled, the rain has returned, and a tree planted now has exactly one job: roots. It is not trying to push leaves. It is not trying to flower. It is not trying to survive 96 degrees while establishing itself in the ground. All of its energy goes down, into the dark, into the specific clay of your specific property, all through our mild winters, when the ground here rarely freezes deep.

Now run the comparison. A tree planted in April gets about ten weeks of root growth before July arrives, and July in Nashville is not a season; it is an interrogation. A tree planted in October gets eight or nine months. By the time the heat comes, the fall-planted tree has already moved in. The spring-planted tree is still living out of boxes.

The math nobody explains until it is too late.

A garden designed the way I design them cannot be conjured in three weeks. I do not say that to be precious about it. I say it because the calendar is simply the calendar, and I would rather you hear it in July than discover it in April.

Here is what a great commission actually requires. Time on your land: walking it, listening to what it is already doing, testing the soil, understanding where the water goes and where the light lands at the hours you will actually be outside. Then the design itself: the thinking, the drawing, the plant sourcing, the revisions. Then installation has to be scheduled, and the good crews in this town book out months ahead.

If you reach out in July or August, we walk your property in late summer, design through early fall, and your garden goes into the ground in the October to December window. In April, while your neighbours are standing in line at the garden center, you are watching a landscape wake up that has been quietly deepening its roots for six months.

If you wait until March, here is what actually happens, and I say this with love: you will not get a spring garden. You will get a spring conversation. The honest arrival point for a project that begins in March is the fall planting window, which is where we would have started anyway, half a year earlier.

What the land is doing while you decide.

A garden planted in the fall spends its first six months invisible. And those are the six months that determine everything. All winter, while the surface shows you nothing, bare branches, cut stems, mulch, patience, the roots are moving through the clay. The garden is happening. It is just happening where you cannot see it.

Then one morning in late March, you walk outside, and the whole thing arrives at once, and it looks like magic, and it is not. It is the visible result of a decision made back when the maples first turned, by someone willing to trust the part of the work that does not reveal itself for six months.

The garden you want next May does not exist yet. Right now it is only a decision. Make it in the fall, and spring is simply the reveal.

A Sylvan Park garden in Nashville holding its structure between seasons
A Sylvan Park garden in Nashville holding its structure between seasons
A planting detail from a Middle Tennessee garden designed by The Grass Girl
Planting detail, Middle Tennessee
A designed landscape in Middle Tennessee, photographed across the seasons
From the studio
“In Tennessee, fall is the best planting season there is. Not a close second. The best.”
Clare HorneFounder, The Grass Girl
Clare Horne, founder and designer at The Grass Girl
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