Comparison table
| Raised bed | Container | In-ground bed | Vertical | |
|---|---|---|---|---|
| Typical size | 4 ft wide, 4 or 8 ft long, 12 in+ deep (Delaware) | 1–3 gal for greens to 8–10 gal for tomatoes (UMD) | Limited only by the yard | A trellis, stake or cage over a bed or pot (Virginia) |
| Works on | Poor, rocky, compacted or contaminated soil; even paving, with a barrier fabric | Patios, balconies, decks, driveways | Reasonably good native soil | Balconies, decks, patios, windowsills, fence lines |
| Growing medium | Topsoil–compost blend or bagged raised-bed mix (Delaware); equal parts topsoil, organic matter, coarse sand (Iowa State) | Commercial potting mix, not garden soil (UW–Madison) | Native soil, amended | Whatever the bed or pot below holds |
| Main advantages | Soil warms earlier, less bending, intensive planting can raise yield (Delaware) | Movable, no ground needed | Least material to buy | Saves floor space, cleaner fruit, better airflow (Virginia) |
| Main drawbacks | Kits cost more; lumber and fill needed | Frequent watering, daily for big fruiting plants (UW–Madison) | Depends on native soil quality and drainage | Heavy crops can overload supports |
| Good first crops | Anything; square-foot grid (UF/IFAS) | Greens, herbs, compact tomatoes | Space-hungry squash, corn, potatoes | Pole beans, peas, cucumbers, melons, tomatoes |
- Raised bed: framed box filled with a soil blend
- Container: potting mix in a pot with drainage
- In-ground bed: amended native soil
- Vertical: crops trained up a trellis
Raised beds
The University of Delaware Cooperative Extension lists the benefits: roots grow above waterlogged, contaminated or compacted ground; soil warms earlier in spring and covers can extend the season; intensive planting can increase yield; and the height reduces bending. Its recommended size is 4 feet wide and 4 or 8 feet long, at least a foot deep, with paths of at least 4 feet between beds. Cedar, cypress, recycled lumber, cinder blocks and bricks are suggested materials; recycled tires and lumber treated with creosote or pentachlorophenol should not be used. Size the fill with the soil calculator.
Containers
Containers put food on any surface with sun. University of Maryland Extension gives minimum sizes by crop class and notes that reused objects, from five-gallon buckets to half whiskey barrels and wading pools, work if they drain. UW–Madison Extension asks for at least six hours of direct sun, commercial potting mix, and daily watering once plants are large. The container size table lists minimums for 25 crops.
In-ground beds
Planting directly in the ground needs the fewest materials and suits crops that sprawl. Its success depends on the native soil; the raised-bed advantages Delaware lists (drainage, warm soil, escaping contamination) are exactly the things an in-ground bed does not provide automatically. Many market growers start in the ground at small scale; ATTRA notes that "many successful growers begin with less than an acre".
Vertical gardens
Virginia Cooperative Extension's guide to trellises, stakes and cages lists pole beans, peas, cucumbers, melons and tomatoes as climbing or trailing crops worth growing upward, and suggests cages for heavy crops such as melons and squash that can overload a trellis. Benefits include efficient use of space, easier harvest, cleaner fruit and better air movement through foliage. Radishes, turnips and lettuce can grow beneath taller vertical crops.
Combining them
The four forms combine easily. One possible layout pairs one or two raised beds planted on a square-foot grid with containers for herbs and tomatoes on a patio, and a trellis on the north edge of a bed for cucumbers or peas. Timing for all of them comes from the same frost dates: see the planting calendar.
Sources
- University of Delaware Cooperative Extension — Raised Bed Gardening (PDF)
- Iowa State University Extension Yard and Garden — What would be a good soil mix for a raised bed?
- University of Maryland Extension — Types of Containers for Growing Vegetables
- University of Wisconsin–Madison Extension — Growing Vegetables in Containers
- Virginia Cooperative Extension — Vertical Gardening Using Trellises, Stakes, and Cages (HORT-189NP)
- UF/IFAS Gardening Solutions — Square Foot Gardening
- NCAT / ATTRA — Market Gardening: A Start-Up Guide
All sources were opened and checked in October 2026. Rules and figures change; confirm with the original before acting.