Planter Sizes and Drainage, Explained
Pick a planter big and deep enough for the plant's roots but not much bigger, with a drainage hole; material changes how fast the soil dries.
By Elissa SanciContributing writer.
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The short answer
The right planter fits the plant's roots without squeezing them and is not far bigger than the plant needs. University of Illinois Extension explains both sides: roots need room, and a larger pot needs watering less often, but a pot that is much too big keeps the soil wet longer, which makes root rot more likely. Whatever the size, the pot needs a hole in the bottom.
What size planter do I need?
Start from the plant, not the pot. Ask how big it will grow, whether it stays for one season or for years, and how often you can water. Illinois Extension notes that shallow pots suit succulents, which like to dry out, while plants that want evenly moist soil do better with a bigger root ball.
For vegetables, the same source gives a volume for each crop. A few examples:
| Pot volume | Example from Illinois Extension |
|---|---|
| Half a gallon | Parsley, 1 plant |
| 1 gallon | Cherry or patio tomato, 1 plant; leaf lettuce, 4 to 6 plants |
| 2 gallons | Eggplant, 1 plant; peppers, 2 plants |
| 3 gallons | Standard tomato, 1 plant |
Shape matters too. The same guide says square pots are the most stable, straight-sided pots tip less than pots that narrow toward the base, and tall plants in small pots can become top-heavy.
Do planters need drainage holes?
Yes, for nearly every plant. Illinois Extension calls the bottom hole critical: it lets water drain so air can reach the roots, and few plants survive sitting in standing water. If a pot has no hole, you can drill one, or use double potting: grow the plant in a plain liner pot with a hole and set it inside the decorative one, emptying any water that collects. A saucer you can remove is easier to empty than one fixed to the pot.
On Wiki Shopping, 96 of the 343 planters listed on October 26, 2026 mention drainage holes in the listing. A listing that does not mention them may still have them, so check the product photos or ask the seller. The planters with drainage holes page collects the ones that do.
Ceramic vs plastic planters
Material changes how fast the soil dries. Illinois Extension explains that porous materials such as unglazed clay and terra cotta soak up water and lose it faster than non-porous ones such as plastic. Water held in the pores of pottery can freeze and crack the pot, so it advises drying and covering pottery for winter. Heavy pots are hard to move once planted; a plant dolly with casters helps.
| Material | Planters on Wiki Shopping | Mention drainage holes |
|---|---|---|
| Metal | 58 | 5 |
| Plastic | 41 | 25 |
| Ceramic | 29 | 18 |
| Concrete | 29 | 13 |
| Wood | 23 | 5 |
| Resin | 14 | 3 |
| Terracotta | 13 | 9 |
| Fiberglass | 9 | 0 |
How we count
Each planter on Wiki Shopping has its material and features read from the store listing. 127 planters state no material and are left out of the material counts. The counts change as listings are added or removed.
Shop by spec
Planters
Raised bed, Wood, 43-inch
- Eight-Box Raised Planter Bed: Our outdoor raised planter is an instant herb garden you can use to hold eight different herbs, flowers, or vegetables. The spacing in the grid lets your plants each have their own section of special soil and stops them from crowding each other.
- Sturdy Construction & DIY: Our raised planter is made out of outdoor-ready fir wood that's been coated with water-resistant paint. With wood that is light enough for two people to take inside, you can protect plants from the elements when there is a storm or it's the end of the season.
- Planter with Storage Shelf: Along with eight planter boxes found on your raised garden bed, you also get a shelf for storage below. Use it for seeds, plant food, shovels, and other gardening tools to make your time out in the soil a lot easier.
- Ergonomic Height: Having a raised garden bed is an excellent decision if you want to take it easy on your back. You won't have to bend, lean, kneel or stoop, making the experience of owning an herb garden a lot more ergonomic. Also, a raised planter keeps your herbs up and away from weeds and wild animals, offering more protection.
- Raised Garden Box Info: Overall Dimension: 43.25" W x 18" D x 30" H. Planter Bed Size: 41.75" L x 16.5" W x 7.25" H. Individual Grid Size: 10.25" L x 8" W. Bottom Shelf Size: 42" L x 14.5" W x 5.25" H cm. Weight Capacity: 40 lbs. (planting area), 25 lbs. (storage shelf). Easy assembly is required. NOTE: To increase the lifespan of this product, we recommend you install non-woven fabric at the bottom of the eight planter boxes.
Raised bed, Wood, 49-inch
- Decorative Trellis: The grid on the back of this planter for outdoor plants can be decorated with vines or LED lights, creating a customizable decoration for any area of your house or garden. It also offers ample growing space for plants, such as grapes or tomatoes.
- Durable and Strong: The planter raised bed is made of solid wood, known for its strength and dimensional stability and its natural resistance to rot. With proper care, this flower shelf can be built outdoors to last through the seasons.
- Practical Planter Box: This raised garden box comes with a deep planter box, providing enough space for cultivating various plants. Moreover, there are drainage crevices on the bottom for draining excess water and making roots grow healthily.
- Customizable: Our raised bed for gardening can be painted to blend perfectly into your porch, patio, or balcony. This means you can add a personal touch to your new plant stand.
- Garden Planter Information: Overall Dimensions: 23.5" L x 11.5" W x 49.25" H, Bed Size: 23.5" L x 11.5" W x 11.75" H.
Raised bed, Wood, 48-inch
- EASY MOBILITY: Built with a set of locking wheels to move the planter from place to place and capture the right amounts of sun and shade
- ERGONOMIC STRUCTURE: Stands 32 inches tall, making it perfect for those who struggle to bend down or lean over while gardening
- GARDEN BED LINER: Separates wood from the soil, keeping planter in excellent condition and preventing weeds and other invasive species from interfering with plant growth
- MAXIMIZE SPACE: Get the most out of your planting and storage space thanks to the large bed with a built-in storage shelf for your favorite garden accessories
- 4 DRAINAGE HOLES: Allows excess water to drain out, preventing root breakdown and oversaturation while keeping the soil fresh; OVERALL DIMENSIONS: 48"(L) x 24"(W) x 32"(H); Weight Capacity: 100 lbs.
Raised bed, Wood, 72-inch
- LARGE PLANTING SPACE: 8.4 cubic feet of space can support your choice of flowers, succulents, vegetables, and more
- PROPER DRAINAGE: Six drainage holes help the roots aerate and allow excess water to escape, encouraging long-term growth while helping prevent rot or mineral build-up
- ALL-WOOD CONSTRUCTION: Naturally durable Chinese fir wood provides a durable, weather-friendly structure that will avoid warps and sagging over time
- ERGONOMIC HEIGHT: The 30-inch tall design removes the need for bending or kneeling, preserving your back and knees as you tend to your balcony, deck, or patio garden
- PROTECT YOUR PLANTS: An elevated bed discourages pets, rodents, and other animals from invading your garden space and ruining your hard work; OVERALL DIMENSIONS: 72"(L) x 24"(W) x 30"(H); WEIGHT CAPACITY: 300 lbs.