Succession planting — the practice of making multiple smaller plantings at staggered intervals rather than one large planting all at once — is what separates a garden that produces abundantly all season from one that buries you in lettuce for two weeks then goes quiet. The concept is simple, but the planning takes some upfront thought. This guide shows you how to build a succession planting calendar specific to your season: how to work backward from your frost dates, which crops benefit most from staggered planting, what intervals to use, and a sample four-month calendar to illustrate the full picture.
The Foundation: Work Backward from Your Frost Dates
Every succession planting plan starts with two dates: your last spring frost date and your first fall frost date. These anchor your planning season. You can find your specific dates by searching your zip code on the USDA Plant Hardiness Zone Map or checking your local cooperative extension service — they typically publish county-by-county frost date data that's more precise than zone maps alone.
With your frost dates in hand, work backward from the first fall frost to determine the latest date you can sow each crop and still get a harvest before cold ends the season. For example, if your first fall frost is October 10 and a lettuce variety has a 45-day days-to-maturity, your last sowing date is approximately August 26. Write these "last sowing dates" down for every crop you plan to grow — they define the back end of your planting window.
From the front end, start with your last spring frost date and count forward: crops that tolerate frost (lettuce, spinach, radishes, peas) can go in 4–6 weeks before that date; frost-sensitive crops (beans, cucumbers, squash) go in after it.
Which Crops Benefit Most from Succession Planting
Not every crop needs succession planting. Tomatoes, peppers, squash, and most brassicas are planted once and produce over an extended period. Succession planting delivers the most value for crops that produce in a short flush, bolt quickly in heat, or have a narrow harvest window.
Lettuce and salad greens are the quintessential succession crop. Individual varieties reach maturity in 45–60 days and become bitter and bolt in summer heat. Sowing every 2–3 weeks from early spring through early fall (with a gap during the hottest weeks) gives you continuous salad greens from April through November in most climates.
Radishes mature in as little as 25 days and become woody and pithy if left in the ground. Sow every 2 weeks for a continuous harvest of crisp radishes rather than a single overwhelming crop.
Beans (bush type) produce a concentrated harvest over 2–3 weeks, then decline. Succession sow every 3 weeks from your last frost date through early summer for harvests that stagger over 2–3 months rather than arriving all at once.
Carrots take 70–80 days and store well in the ground in cool weather, so succession planting is less about avoiding gluts and more about ensuring you have a fall crop maturing when the ground cools. Plant a second succession 6–8 weeks after the first to hit that sweet spot.
Cilantro and dill bolt quickly in warm weather. Sow small amounts every 3–4 weeks starting in early spring and again in late summer for continuous fresh herb harvests without the frustration of everything flowering at once.
Succession Intervals: How Far Apart to Space Your Plantings
The right interval between successions depends on days-to-maturity and how long a plant stays productive after reaching harvest size. A useful rule: the faster the crop matures, the shorter the succession interval should be.
Radishes (25–30 days to maturity): sow every 2 weeks
Lettuce (45–60 days): sow every 2–3 weeks
Spinach (40–50 days): sow every 2–3 weeks
Beans, bush (50–60 days): sow every 3 weeks
Carrots (70–80 days): sow every 4–6 weeks
Cilantro/dill (45–60 days to bolt): sow every 3 weeks
You don't need to plant large quantities each time — the goal is small, staggered plantings. A 4-foot row of lettuce every 2–3 weeks is far more manageable than a 20-foot row all at once.
Sample 4-Month Succession Planting Calendar (Zones 5–7)
This sample calendar assumes a last spring frost of May 1 and a first fall frost of October 10.
Early March (indoors): Start first lettuce transplants indoors under lights. Sow parsley and basil indoors.
Late March: Direct sow spinach, radishes, and peas outdoors (these tolerate frost). Start second lettuce succession indoors.
Mid April: Transplant first lettuce outdoors. Direct sow second radish succession. Start third lettuce succession indoors. Direct sow carrots (first succession).
Late April / Early May (around last frost): Direct sow first bean succession. Transplant second lettuce outdoors. Direct sow cilantro and dill.
Mid May: Direct sow second bean succession. Third lettuce transplants out. Second radish succession. Second cilantro sowing.
Early June: Third bean succession. Begin gap in lettuce (heat causes bolting in most zones). Second carrot succession.
Late July: Resume lettuce sowings for fall harvest. Direct sow spinach. Third cilantro sowing.
Mid August: Final bean succession (needs to mature before frost). Fall lettuce and spinach ongoing every 2 weeks. Last direct sow for radishes.
Keeping Track: Simple Planning Tools
A succession planting plan doesn't need complex software. A simple paper calendar or spreadsheet with columns for crop, sow date, expected harvest date, and succession number works perfectly. Some gardeners use a whiteboard in the potting shed updated weekly. The most important habit is recording what you actually planted and when — not just what you planned — so you can refine the schedule in future seasons based on real results.
Visit the garden calculators on this site for tools that help calculate last sowing dates based on your frost date and days-to-maturity.
Frequently Asked Questions
- Do I need to succession plant everything?
- No. Crops that produce over an extended period (tomatoes, peppers, zucchini, climbing beans) don't benefit much from succession planting. Focus your succession efforts on crops with short harvest windows: lettuce, radishes, spinach, cilantro, dill, and bush beans. These give you the biggest return from staggered sowing.
- How do I make space for succession plantings?
- Plan for it. Grow quick-maturing crops (radishes, lettuce) in the same beds where you'll later plant summer crops. When the spring lettuce is done in June, that bed becomes the space for your second bean succession or late-season carrots. Succession planting and space planning are closely linked.
- What if I forget to succession plant on schedule?
- Just pick up where you are. A two-week delay in sowing a lettuce succession means a two-week gap in harvest, not a ruined garden. Succession planting rewards consistency but tolerates imperfection. Getting a late sowing in is always better than skipping it entirely.
- Can I succession plant in containers?
- Yes — lettuce and radishes are excellent container succession crops. Use 10–12 inch deep containers, refresh the soil between successions, and keep containers where they'll get adequate sun as the season progresses.