Planning Next Year's Vegetable Beds Over Winter: Rotation, Layout and a Shopping List
The vegetable garden is quiet in winter, which makes it the best time to plan it. Nothing is growing, seed catalogs have arrived, and last season is still fresh enough to remember which bed flooded, which tomatoes split and where the slugs lived. An evening with a notebook and two GardenStuffs tools turns those memories into a plan for next year: which crops go in which bed, how many of each, and how much compost to buy before spring.
The two tools are the Garden Layout Planner, which splits a bed between two to six crops and lists traditional companions and crops to keep apart, and the Soil Volume Calculator, which works out how much compost or soil a bed needs for a given depth.
Step 1: write down what happened this year
Before planning forward, record what you grew where. A rough sketch of each bed with the crops in it is enough. Then add a line or two on each:
- What did well, and what struggled? Note the variety if you know it.
- Which pests or diseases showed up, and in which bed?
- Did any bed stay wet, dry out fast, or lose sun as nearby trees grew?
- Did the soil level drop? Raised beds commonly settle as organic matter breaks down.
This record is what makes rotation possible. Without it, by spring it is hard to remember whether the tomatoes were in the left bed or the right.
Step 2: rotate crop families, not single crops
Crop rotation means not growing the same family of plants in the same soil year after year. The usual reason given is that pests and soil-borne diseases that attack one family can build up when that family stays put. Rotation helps most when the crops that share a problem move together, so plan by family:
| Family | Crops in the planner |
|---|---|
| Nightshades | Tomato, pepper, potato |
| Legumes | Bean, pea |
| Brassicas | Cabbage, broccoli, kale, radish |
| Alliums | Onion, garlic |
| Cucurbits | Cucumber, zucchini |
| Others | Lettuce, carrot, beet, spinach, basil |
With two beds, a simple rotation is to swap the nightshade bed and the legume bed each year. With three beds, move each group one bed along each year so a family returns to the same soil every third year. Rotation in a small garden has limits, because beds a few feet apart share pests that fly or crawl, but it costs nothing to plan.
Step 3: lay out each bed in the planner
Here is a two-bed rotation for a pair of 4 x 8 foot beds, run through the layout planner. Each crop gets an equal share of 8 square feet.
Year one
| Bed | Crops and plants that fit | Good companions flagged |
|---|---|---|
| Bed A | Tomato 2, pepper 3, basil 11, marigold 18 | Tomato and basil, tomato and marigold, pepper and basil |
| Bed B | Bean 32, pea 72, lettuce 11, carrot 128 | Pea and carrot, lettuce and carrot |
Year two
Swap the plans: Bed B gets the tomato, pepper, basil and marigold mix and Bed A gets the beans, peas, lettuce and carrots. The counts and pairings are the same, because the beds are the same size; what changes is that the nightshades are in soil that grew legumes the year before.
Neither year's mix triggers a Keep Apart warning. A brassica bed added as a third bed works too: broccoli 3, cabbage 3, kale 4 and onion 72 in a 4 x 8 bed, with broccoli and onion and cabbage and onion flagged as good companions. If you add potatoes, treat them as part of the nightshade group: give them space away from the tomatoes and do not plant them where tomatoes grew last year. The planner flags tomato and potato as a pair to keep apart.
Two cautions about the counts. The planner shares the bed equally, which is rarely how you would really divide it (nobody needs 18 marigolds), and it counts by area (the page labels the column an area-based estimate), which can be more than fits in whole rows. Treat the output as a ceiling and adjust. It also lists pepper and marigold, and pea in the legume bed, under "No companion data": the table has no entries of their own, so the absence of a warning about them is missing data rather than an all-clear. Our 4 x 8 raised bed guide shows how to check each patch with the Plant Spacing Calculator, and the guide to which pairs the planner flags explains how much weight to give the companion lists.
Step 4: work out the compost top-up
Raised beds lose height as compost and other organic matter break down. A top-up each year keeps the beds full and adds organic matter. Measure how far the soil has dropped below the frame, then enter the bed size and that depth in the Soil Volume Calculator:
| Top-up | Cubic feet | Cubic yards | 1 / 1.5 / 2 cu ft bags |
|---|---|---|---|
| 2 in on one 4 x 8 bed | 5.33 | 0.198 | 6 / 4 / 3 |
| 2 in on three 4 x 8 beds | 16 | 0.593 | 16 / 11 / 8 |
| 1 in on three 4 x 8 beds | 8 | 0.296 | 8 / 6 / 4 |
For three beds, enter them as one rectangle 24 feet long and 4 feet wide; the area is the same. Bag counts round up to whole bags. Buying in winter or early spring, before the rush, often means better choice. Our guide to how much compost to add to a bed goes into depths and how compost differs from topsoil.
Step 5: dates and a shopping list
With beds and counts settled, add dates. The Planting Calendar works out seed-starting, transplant and harvest dates from your last spring frost date; frost dates vary by location and from year to year, so use a local source and treat the result as a guide. Then write the list:
- Seeds and plants per bed, from the planner and spacing calculator, plus a few spares.
- Compost or soil, from the soil calculator.
- Seed-starting supplies if you start indoors.
- Repairs: rotten boards, broken stakes, worn tools.
What these tools do not cover
- Rotation history. Neither tool remembers what grew where. That is what your notes are for.
- Unequal shares. The layout planner always splits equally. Divide the bed yourself and run each part through the spacing calculator for an exact plan.
- Soil quality. The soil calculator gives volume only. A soil test every few years tells you pH and nutrients; the Fertilizer Calculator turns a result into an amount, and the product label and your test take priority over its estimate.
- Succession. Plans assume one crop per space per season. Quick crops like lettuce and radish can share space with slow ones over time.
Winter jobs, done safely
- Tools: clean, dry and sharpen them. Wear gloves when sharpening, keep your tetanus vaccination up to date, and follow the manual for any power tool.
- Bed repairs: for food beds, do not use old railroad ties, CCA-treated timber or wood with old paint, which may contain lead. Check the label on new treated lumber.
- Digging: if new beds or posts mean digging deeper than a few inches, call your utility-locate service first (811 in the US).
- Lifting: compost bags are heavy, especially when wet; lift with your legs or use a cart.
- Storage: keep fertilizers and pest products in their original containers, locked away from children and pets.