Do you wonder when to transplant kohlrabi seedlings? Kohlrabi is a versatile and nutritious vegetable that can be a great addition to your home garden. It is not as popular as some other crops, but it’s relatively easy to grow, especially in cooler climates.
Understanding the different stages of growth, from seeding to transplanting and eventual harvesting, is key to a healthy kohlrabi crop. Addressing issues like legginess, yellowing, wilting, or stunted growth promptly can make the difference between a successful harvest and disappointment.
When To Transplant Kohlrabi Seedlings?
Kohlrabi seedlings are typically ready to be transplanted when they’ve grown to about 3 to 4 inches tall, which generally takes around 4-6 weeks from the time of sowing. It’s essential to wait until after the last frost of the season before moving these cool-weather crops outdoors.
Also, the seedlings should have at least 2-4 true leaves. This indicates that they have a robust root system capable of sustaining growth after the transplant. Ensure that the outdoor soil temperature is above 40 degrees Fahrenheit, as kohlrabi prefers cooler soil conditions.
How To Transplant Kohlrabi Seedlings?
You already know when to transplant kohlrabi seedlings, it’s time to transplant them. Start by hardening off the kohlrabi seedlings, which involves acclimating them to outdoor conditions over a week or so before transplanting. Gradually expose them to the elements, starting with a few hours a day and increasing until they’re out all day and night. Water the seedlings well before transplanting to reduce transplant shock.
Then, dig a hole in the prepared garden bed that is deep and wide enough to accommodate the seedling’s root ball. Place the seedling in the hole, making sure the top of the root ball is level with the soil surface. Backfill the hole with soil, firm it gently, and water well.
How Deep Should I Plant Kohlrabi Seedlings?
When planting kohlrabi seedlings, depth is crucial for their successful establishment. You should plant the seedlings at the same depth they were growing in their original container.
This usually means that the top of the root ball should be level with the soil surface. It’s important not to plant the seedlings too deep as this can cause the stems to rot, but planting them too shallow may lead to drying out. Proper depth ensures the seedlings receive adequate water and nutrient absorption.
How Often Should I Water Kohlrabi Seedlings?
Kohlrabi seedlings require consistent moisture for healthy growth. The soil should be kept moderately moist, but not waterlogged. Watering frequency may vary based on weather conditions, but generally, you should water the seedlings once every 2-3 days.
If the top 1-2 inches of soil dry out, it’s time to water. During hotter weather or if the plants are in full sun, they may need watering daily. But, be cautious not to overwater as this could lead to root rot and other diseases.
Can I Grow Kohlrabi Seedlings In Pots?
Yes, growing kohlrabi in pots is entirely feasible and can be quite successful. It’s an excellent option for those with limited garden space. Kohlrabi does not have a deep root system, so they are well-suited for container gardening.
The pot should be at least 12 inches deep and wide to provide adequate room for growth. Ensure the container has good drainage to prevent water-logging. Kohlrabi grown in pots may need more frequent watering as containers can dry out quickly.
How Do I Thin Kohlrabi Seedlings?
Thinning kohlrabi seedlings is important for their healthy growth and to prevent overcrowding. Once the seedlings have germinated and are about 2 inches tall, it’s time to thin them. The goal is to have one strong plant every 4-6 inches.
To thin the seedlings, gently pull out the weaker ones, leaving the strongest ones to continue growing. Doing this in the cool of the morning or evening can reduce stress to the remaining plants. Be cautious not to disturb the roots of the seedlings that are staying behind.
What Should I Do If My Kohlrabi Seedlings Are Leggy?
Leggy seedlings are usually the result of inadequate light. If your kohlrabi seedlings are leggy, try to increase their exposure to light. Ideally, they should have 12-16 hours of light per day.
Using a grow light can help provide the necessary illumination. If you’re already using a light and the seedlings are still leggy, try moving the light source closer, as the light might not be intense enough. Also, rotating your plants can help them grow evenly.
Why Are My Kohlrabi Seedlings Wilting?
Wilting kohlrabi seedlings can be a sign of a few potential issues such as overwatering, underwatering, heat stress, or disease. Overwatering and poor drainage can lead to root rot, causing plants to wilt. On the other hand, too little water will cause dehydration and wilting.
If watering levels are optimal, the wilting might be due to heat stress, particularly if the temperatures have been high. Finally, certain diseases or pests can also cause wilting. Carefully examine your plants for signs of disease or pest damage and treat accordingly.
Why Are My Kohlrabi Seedlings Turning Yellow?
Yellowing of kohlrabi seedlings can be caused by various factors including nutrient deficiencies, watering issues, or disease. Nutrient deficiencies, particularly of nitrogen, can result in yellow leaves. Consider applying a balanced vegetable fertilizer to address this.
Overwatering can also lead to yellowing leaves due to root rot. If the soil is too dry, the plant can also turn yellow. A disease, such as a fungal infection, may also be the cause. In such cases, removal of infected plants and use of appropriate fungicides may be necessary.
Why Are My Kohlrabi Seedlings Turning Black?
Blackening of kohlrabi seedlings is often a sign of a fungal disease called black rot. This disease causes dark spots on the leaves which eventually spread, making the leaves turn black and wilt. It’s a serious condition that can kill the plant if left untreated.
If you notice your seedlings turning black, remove and destroy the infected plants immediately to prevent the disease from spreading. Improve the soil drainage and avoid overhead watering to prevent fungal diseases. Application of a suitable fungicide can also help.
What Should I Do If My Kohlrabi Seedlings Are Not Growing?
If your kohlrabi seedlings are not growing, there may be issues with the growing conditions such as inadequate light, incorrect watering, poor soil fertility, or temperature stress. First, make sure the plants are getting at least 6 hours of sunlight each day.
Proper watering is also crucial, as both overwatering and underwatering can stunt growth. Additionally, the seedlings may be lacking necessary nutrients. Applying a balanced vegetable fertilizer can provide the required nutrients for growth. Lastly, ensure the plants are not exposed to extreme temperatures, as kohlrabi prefers cooler conditions.
