Last Updated on September 18, 2026
How Many Oregano Plants per Square Foot?
1 oregano plant per square foot, centered in the square, 12 inches from the next plant over. Unlike most square foot crops, that single plant is not replaced each spring. Oregano is a spreading perennial, so the 1 you plant this year is the same plant filling the square in year two and year three, not a fresh planting.
The spacing pattern
| Per square foot | 1 plant, centered in the square |
|---|---|
| Inches apart | 12 inches, center to center with the next square’s plant |
| 4 x 4 bed (16 squares) | up to 16 oregano plants |
| 4 x 8 bed (32 squares) | up to 32 oregano plants |
| 3 x 6 bed (18 squares) | up to 18 oregano plants |
That is the count on my square foot gardening chart, and the Plan My Garden planner spaces oregano the same way, 1 plant to each 1 x 1 foot cell. Treat the bed counts as a starting layout: Penn State Extension puts a full-grown plant at 10 to 20 inches wide, almost the width of its own square, so a bed planted solid with oregano fills in edge to edge within a couple of years.
Why a spreading perennial earns the whole square
University of Maryland Extension describes oregano, also called wild marjoram, as a hardy perennial with sprawling stems that can grow to 2 feet, propagated by seed or by division. Penn State Extension adds that it grows from a creeping rootstock, reaching 12 to 24 inches tall and 10 to 20 inches wide once established. An annual crop is planted, harvested, and pulled the same year; oregano keeps growing outward from that one spot instead, so the count on the chart is a planting count, not the mature footprint.
Want the square filled the first year instead?
If you do not want to wait a couple of years for a single plant to spread, set more than one start in the square. University of Maryland Extension’s own thinning spacing for oregano grown from seed is 10 to 12 inches apart, tight enough to fit two or three seedlings across a 12 inch square. Let them grow in together for a solid patch the first summer instead of a single young plant with bare soil around it.
Harvest and cutting back so it does not go woody
Penn State Extension says to harvest oregano in summer or early autumn, before full flower, gathering up to three quarters of the current season’s growth at once. Earlier in the season, once the plant has about 6 inches of growth, pinch back the tips to encourage more shoots, and University of Maryland Extension adds cutting back the flowers to stimulate foliage, the same habit that keeps a mound from getting leggy. Even with regular cutting, both extensions say the base still goes woody after 3 to 4 years: University of Maryland Extension calls for replanting on that schedule, and Penn State Extension recommends cutting out the old leggy wood at the end of winter and replacing the plant about every four years.
Dividing oregano
Division is one of the ways both extensions describe growing oregano in the first place, alongside seed and, per Penn State Extension, softwood cuttings taken in spring: a shoot 3 to 5 inches long, cut at a 45 degree angle, stripped of its bottom leaves, and rooted in a sandy medium before potting up. Dividing the rootstock at the point a plant is getting woody does double duty, a fresh start for that square and a spare piece for another one.
The square stays full through winter in cold zones
My vegetable frost tolerance chart lists oregano among the hardy perennials, alongside chives, thyme, sage, mint, lavender, strawberries, and garlic, that stay in the ground over winter with no cover needed, and the Plan My Garden planner marks it hardy too. Penn State Extension backs that up separately, classing oregano as a perennial rather than an annual. In cold zones, a square growing oregano already has a living plant in it come spring, so leave it out of what you replant and plan the rest of the bed around it.
When to plant oregano
These are the windows the Plan My Garden planner and my seed starting calendar use, counted from your average last spring frost. Turn the weeks into dates with the seed starting calendar, or enter your zip code on Plan My Garden.
| Start indoors | 10 weeks before to 8 weeks before your last frost |
|---|---|
| Transplant out | 1 week after to 2 weeks after your last frost |
| Direct sow | As soon as the soil can be worked, the same window my raised bed herb garden layout page gives for oregano |
| Days to maturity | 80 days on my vegetable days to maturity chart, for a first harvest from seed |
| Frost tolerance | Hardy on my vegetable frost tolerance chart, one of the hardy perennials that overwinters in place without a cover |
Seed
Wood Prairie carries organic Greek oregano, 90 days, sprawling plants that reach about 2 feet tall and wide. A packet of roughly 200 seeds plants about 8 feet of row: organic Greek oregano seed. Code PMG5 takes 5 percent off.
Quick questions
How many oregano plants fit in a 4×8 raised bed?
Up to 32 plants at 1 per square foot, 12 inches apart. A 4×4 bed holds up to 16 and a 3×6 bed holds up to 18, but that is a starting layout. A full-grown plant spreads 10 to 20 inches wide, so it can fill or crowd into the next square on its own within a couple of years.
Is 1 oregano plant per square really enough?
Yes, because it is a perennial that spreads rather than an annual that needs replacing. University of Maryland Extension describes oregano as a hardy perennial with sprawling stems, and Penn State Extension puts a full-grown plant at 10 to 20 inches wide, wide enough to fill a 12 inch square by itself over time.
What if you want the square filled the first year?
Set more than one plant in it. University of Maryland Extension’s thinning spacing for oregano grown from seed is 10 to 12 inches apart, close enough to fit two or three seedlings in one square so they grow in together the first summer instead of waiting on a single plant to spread.
Do you need to replant an oregano square every spring?
No. My vegetable frost tolerance chart lists oregano among the hardy perennials that stay in the ground over winter with no cover needed, and the Plan My Garden planner marks it hardy too. Leave that square out of your yearly replanting.
How do you keep oregano from getting woody?
Pinch back the tips once the plant has about 6 inches of growth and cut it back before it flowers, both from Penn State Extension and University of Maryland Extension. Even with regular cutting, both extensions say plants get woody at the base after 3 to 4 years and recommend dividing or replacing the plant on that cycle.
Let the planner place them
A perennial square still starts with a plan. Plan My Garden is free to start: enter your zip code, draw your beds, pick oregano and everything else you want to grow, and it places each plant at square-foot spacing and builds a planting schedule from your frost dates.
Related: Raised Bed Herb Garden Layout · Square Foot Gardening Chart · Seed Starting Calendar · How Many Chive Plants per Square Foot? · How Many Parsley Plants per Square Foot?
