Garden Planner — What to Plant This Month

How to plan a month in the garden

Good gardening is mostly good timing. A garden planned month by month — a little sown, a little transplanted, a little harvested every few weeks — produces more food with less waste than a garden planted all at once in spring. This planner gives you the skeleton of that rhythm: for any zone and any month, it lists what to start indoors, what to sow outdoors, what to move out, and what should be ready to pick. Use it at the start of each month to decide what the garden needs from you, and use it in winter to plan the year ahead.

How the lists are built

Every crop in our database carries three pieces of timing information: how it is sown (indoors, direct, or either), how cold-tolerant it is (hardy, frost-tolerant or tender), and how long it takes to mature. The planner combines those with your zone's average frost dates. Hardy crops are sown outdoors four to six weeks before the last frost; tender crops wait until after it, and are started indoors six to eight weeks before it. The harvest list counts forwards from the usual sowing window by days to maturity. That is the same logic a printed planting calendar uses — the difference is that you can change the zone and month and watch the plan change, which is the fastest way to build a feel for how the seasons shift across the country.

In frost-free zones (11–13) the logic changes: without frost to frame the year, the planner treats tender crops as sowable in any month and cool-season crops as best sown from October to February, when the heat eases. That is a simplification — in practice, tropical gardeners plan around rain and heat rather than frost — but it keeps the lists honest instead of pretending frost dates exist where they do not.

Succession sowing: the habit that changes everything

The single most useful habit in vegetable gardening is succession sowing: sowing a little, often. Most salad crops, beans, peas and root vegetables are ready within 40–70 days and then decline, so a single sowing gives you a glut followed by a gap. Sow a short row every two weeks instead, and the harvest becomes continuous. The planner helps here too: if lettuce appears in the sow list for March, April and May, that is not a mistake — it is three opportunities to sow. The same applies in autumn: a September sowing of spinach or kale, made eight weeks before the first frost, will feed you well into winter in many zones.

Think in terms of beds, not crops. A bed that held spring lettuce can hold summer beans, then autumn spinach — three crops from one space in one year. When you look at a month's lists, ask what is finishing as well as what is starting: the harvest list tells you what is coming out, and the sow list tells you what can go into the space it leaves. Keep the soil fed between crops with compost, and do not plant the same family in the same bed twice in a row — rotation is what keeps soil-borne disease from building up.

What the planner does not know

The planner knows zones and months; it does not know your soil, your rainfall, or your microclimate, and those matter. A garden in a frost pocket runs two weeks behind its zone; a sheltered walled garden runs a week ahead. Heavy clay soil stays cold and wet long after the frost date, so direct sowing there needs an extra week or two even when the calendar says go. And heat is a limit the planner does not model: in zones 8 and above, lettuce, peas and spinach bolt in summer heat regardless of what the frost calendar says, while in cool zones a “tender” crop may still sulk through a cold June. Treat the lists as a starting point, watch what actually happens in your garden, and keep notes — after one full year, your own records will be the best planner you own.

Related tools: the Planting Calendar by ZIP / Zone adds your state to the picture, the Seed-Starting Calculator gives exact indoor sowing dates, and the Square-Foot Garden Planner turns your list into a bed layout. Browse the planting calendar hub for month-by-month pages by zone.