Making a planter for strawberry plants exclusively has an advantage over planting them in the ground. In a tiered container, strawberry plants do not have to compete with other plants. This also gives you a convenient opportunity to water, weed and pick the strawberries when they ripen. A strawberry planter saves space and gives character to your backyard, porch or table. You can put a strawberry planter of any size together easily. Pots made from clay, plastic, ceramic, metal or wood will work. You do need to ensure that they have drainage holes in the bottom.
Determine the shape of your strawberry planter and the number of tiers. Each pot must be 15 to 20 cm (6 to 10 inches) smaller in diameter than the one on top of it. Plant your strawberries in soil 10 to 15 cm (4 to 6 inches) deep.
Cover the drainage holes with shards. This will keep the soil from washing out of the pot when you water.
Fill the base pot with potting soil or a good compost mixture with equal portions of soil, peat moss and perlite. Add enough potting soil to fill the pot within 10 cm (4 inches) from the top.
Place the second pot on top of the first to position it in the middle of the base pot. Cover the drainage holes with shards. Fill the pot with some potting soil to keep it from moving.
Plant strawberry plants 10 cm (4 inches) apart in the soil of the base pot. Cover the roots with additional soil, keeping the crowns just above soil level. Do not bury them too deep or they will rot. The soil should reach to 1.8 cm ( 3/4 inch) below the rim of the base pot. Water this bottom pot well.
Fill the second pot as you did the first to within 10 cm (4 inches) of the rim.
Repeat the above steps until you have the pots filled with soil, the strawberries planted and all pots watered.
If you choose a deep pot, 30 cm (12 inches) or more, for the base, centre an empty pot turned upside down on the bottom. Choose a sturdy pot so it will not break under the weight of the other pots stacked on top. An example of three sizes to use to construct a three-tier planter is a 60, 40 and 20 cm (24, 16 and 8 inch) diameter pots. Place the planter in a sunny location. Strawberries need sunlight to grow and produce berries.
Each additional tier will make your planter more unsteady. Three tiers will give you a nice tiered planter and still be steady. When you fill and water all tiers, the planter can be heavy. If you don't fill the planters in your desired location, put the planter on a wheeled board for easy transportation.