Introduction Growing kohlrabi in plastic bottles is a great way to recycle and enjoy fresh vegetables, even when space is limited. This method is perfect for urban gardeners or those who want to try their hand at home gardening without committing to a large garden plot.
Choosing the Best Kohlrabi Varieties for Containers When it comes to container gardening, not all kohlrabi varieties are created equal. For growing in plastic bottles, opt for smaller, compact varieties that are well-suited to tight spaces. ‘Quickstar’ and ‘Kolibri’ are excellent choices due to their smaller size and faster maturation. These varieties are less likely to outgrow their containers and will thrive even in the limited soil volume of a plastic bottle.
Preparing Your Plastic Bottles To get started, you’ll need clean, large plastic bottles—2-liter soda bottles work great. Cut off the top third and poke several drainage holes in the bottom. If you’re feeling creative, you can paint or decorate the outside of the bottles to your liking. Just make sure the paint is non-toxic and safe for plants.
Soil and Planting: Use high-quality potting soil to fill your bottles. This mix should be light and well-draining to avoid waterlogging. Sow kohlrabi seeds directly into the soil, planting them about 1 cm deep. You can start the seeds indoors and move them outside when the weather warms up. If you live in a mild climate, you can grow them outdoors year-round.
Sunlight and Location: Kohlrabi needs plenty of sunlight. Therefore, place your bottle gardens in a location that receives at least 6 hours of direct sun per day. South-facing windowsills, balconies, or terraces are typically ideal.
Watering and Fertilizing Regular watering is crucial for bottle gardening, as the soil can dry out quickly. Water your kohlrabi whenever the top inch of soil feels dry to the touch. Be careful not to overwater, as poor drainage can lead to root rot. Feed your plants with a diluted liquid fertilizer every few weeks to provide them with the necessary nutrients.
Pest and Disease Management: Keep an eye out for common pests like aphids and cabbage worms. Since you’re gardening in containers, it’s easier to control these pests manually or with organic methods. Diseases are less common in well-drained containers, but diseased leaves should always be removed promptly.
Harvesting: Harvest your kohlrabi when the tuber stalk reaches a diameter of about 5 to 7 cm. This size ensures the vegetable is tender and flavorful. To harvest, carefully pull or cut the stalk at the base.
Bottom line: Growing kohlrabi in plastic bottles is a fun and environmentally friendly way to grow your own vegetables. It’s a simple, space-saving solution that can produce delicious results. Happy gardening!
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