Buy Small: Why One-Gallon Pots Beat the Showy Ones
This week, something that costs you real money if you get it wrong, and I got it wrong more than once before I figured it out.
At the nursery there's always a table of five-gallon plants up front, already full and blooming, looking like an instant yard. Next to them, off to the side usually, a bunch of little one-gallon pots that look sad by comparison. Skinny, a few leaves, nothing much going on.
Buy the sad little ones. I mean it.
Why smaller wins
Here's what nobody tells you at the register. A plant's roots and its top growth are in a relationship. When a nursery pushes a plant to look big and full in a pot, they've usually pushed the top growth harder than the roots underneath. That plant looks great the day you buy it. Then you put it in your yard and it just sits there, or worse, it struggles, because the root system wasn't built out enough to support all that top growth once it's off daily greenhouse water.
A one-gallon plant hasn't been pushed like that. It's had time to build a root system proportional to what's above ground. In the ground it settles in faster, and within a season or two it usually catches the five-gallon plant in size anyway. Sometimes it passes it.
And it costs a third as much. Sometimes less.
The jungle lesson
My first bed ever, I planted everything too close together because the plants looked so small at the nursery. Little penstemon and rabbitbrush starts, maybe eight inches across. I looked at the space between them and thought, that's way too much room, I'll fill it in. Crammed them in tight, feeling proud of myself for maximizing the space.
Two years later it was a jungle. A genuine jungle. Everything grown into everything else, plants fighting for light, and I had to get back in and dig half of it out, which is miserable work once the roots are established and tangled. That was a lesson. Plants grow. Who knew.
Small pots and proper spacing go together. When you buy small, you have to trust the spacing on the tag, even though the bed looks embarrassingly empty on planting day. It won't stay empty. Give it a season.
What to do
Here's how I'd shop heading to the nursery this fall, or even window shopping now to plan for it.
Look for the one-gallon size specifically. Most nurseries carry native and adapted plants in one-gallon, sometimes even smaller quart pots for groundcovers. Skip the five-gallon table unless you've got one spot where you want something established right away, like a focal point by the front door where you don't want to wait.
Check the tag for mature spread, not just height. That number sets your spacing. If the tag says three feet spread, give it three feet from the next plant's center, even though right now it looks silly.
Tip the pot and look at the roots before you buy, if the nursery lets you. You want white or light-colored roots filling the pot but not circling around and around in a tight spiral. A plant that's sat in that one-gallon pot too long gets root-bound, roots just going in circles because they hit the plastic and had nowhere else to go. That's a plant you'll need to rough up at planting time, tease those roots loose or even score the root ball with a knife, or it'll keep growing in circles in your soil and never reach out.
Buy fewer than you think you need. This is the hard part. Everybody wants instant coverage and a full bed on day one. Resist it. Space for the mature size, mulch the bare ground between, and let the plants do what plants do, which is grow.
One real caution, nothing dramatic. If you're digging out an old root-bound plant or scoring roots with a blade, keep your fingers behind the blade and take your time. It's a slow, boring cut, not a hacking motion. I've nicked a knuckle doing it fast because I was rushing to the next plant.
Before next time
Got a nursery trip coming up, or even a Saturday to browse? Go look at the one-gallon table before anything else, and price out what a bed would cost you both ways. I think the number will surprise you.