Growing fresh carrots in a container on a deck or balcony provides quick access to crunchy vegetables for snacking or cooking. Any carrot variety can be grown in containers, as long as they are provided with enough root space, but with 'Baby Spike' carrots, you can plant and harvest these tender morsels in as few as 52 days. These easy-to-grow vegetables require little care and produce frilly foliage to lend a decorative touch to your yard.
Prepare a soil mixture for your container garden by mixing equal parts commercial potting soil (or garden loam), peat moss, compost or well-rotted manure and perlite. Carrots prefer light soil that is rich in organic matter.
Sow seeds to a depth of 1/8 inch and cover lightly with soil. Firm down to secure the seeds and remove air pockets. Water to moisten the soil.
Keep soil moist until seedlings appear in 14 to 21 days. Carrots germinate slowly but grow rapidly once seedlings emerge.
Place in a sunny location that receives direct sunlight for 6 to 8 hours a day.
Fertilize with manure tea or water-soluble fertilizer once seedlings are 4 inches high. Repeat every 2 to 4 weeks.
Water when the soil dries. Typically, watering until water runs from the bottom of the pot once a week provides adequate water for carrots, but container gardens often dry quickly during hot weather. Check the soil by inserting you finger 2 inches below the surface of the soil. Water if soil is dry.
Cover the tops of carrots with fresh soil if the shoulders turn green in response to sunlight.
Harvest when carrots are 3 to 4 inches long and 1/2 inch in diameter.