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How to Grow Kohlrabis
Contributed by: Swan
  • 1. What family does kohlrabi belong to?
A) Brassica
B) Solanaceae
C) Cucurbitaceae
D) Asteraceae
  • 2. Kohlrabi is essentially a swollen...
A) Fruit
B) Root
C) Leaf
D) Stem
  • 3. When is the best time to plant kohlrabi for a spring harvest?
A) Mid-Winter
B) Late Fall
C) Early Spring
D) Late Summer
  • 4. What soil pH is ideal for kohlrabi?
A) 8.0-9.0
B) 4.5-5.5
C) 9.5-10.5
D) 6.0-7.5
  • 5. How much sunlight does kohlrabi need daily?
A) 4-5 hours
B) 2-3 hours
C) 0 hours
D) 6+ hours
  • 6. What type of soil is best for kohlrabi?
A) Sandy, infertile
B) Rocky
C) Clay-heavy
D) Well-draining, fertile
  • 7. What is the recommended spacing between kohlrabi plants?
A) 1 inch
B) 18-24 inches
C) 6-9 inches
D) 3 feet
  • 8. How deep should kohlrabi seeds be planted?
A) 3 inches
B) 2 inches
C) 1 inch
D) 1/4 - 1/2 inch
  • 9. What is a common pest that affects kohlrabi?
A) Aphids
B) Tomato hornworms
C) Squash bugs
D) Cabbage worms
  • 10. What is a common disease that affects kohlrabi?
A) Clubroot
B) Septoria leaf spot
C) Late blight
D) Powdery mildew
  • 11. How often should kohlrabi be watered?
A) Never, relies on rainfall
B) Regularly, keeping soil moist
C) Once a week
D) Only when soil is completely dry
  • 12. When is kohlrabi typically ready to harvest?
A) When leaves turn yellow
B) When bulb is 2-3 inches in diameter
C) When flowers appear
D) When bulb is 6 inches in diameter
  • 13. What part of the kohlrabi plant is typically eaten?
A) The bulb
B) The leaves only
C) The flowers
D) The roots
  • 14. How can you prevent kohlrabi from becoming woody?
A) Watering less frequently
B) Harvesting when young and tender
C) Adding more fertilizer
D) Planting in shade
  • 15. What nutrient is important for kohlrabi's bulb development?
A) Nitrogen
B) Phosphorus
C) Calcium
D) Potassium
  • 16. What is a good companion plant for kohlrabi?
A) Marigolds
B) Rosemary
C) Mint
D) Fennel
  • 17. What is the typical lifespan of a kohlrabi plant?
A) Biennial
B) Perennial
C) Depends on the variety
D) Annual
  • 18. How should kohlrabi be stored after harvest?
A) At room temperature
B) Dried in the sun
C) Frozen without blanching
D) Refrigerated
  • 19. What benefit does crop rotation provide for kohlrabi?
A) Reduces pest and disease buildup
B) Depletes soil nutrients
C) Increases soil salinity
D) Attracts pollinators
  • 20. What does 'bolting' refer to in kohlrabi?
A) Premature flowering
B) Bulb cracking
C) Leaf discoloration
D) Root rot
  • 21. What can cause kohlrabi to bolt prematurely?
A) Consistent watering
B) Consistent sunlight
C) Temperature fluctuations
D) Rich soil
  • 22. Which of these is a common kohlrabi variety?
A) Cantaloupe
B) Purple Vienna
C) Beefsteak
D) Roma
  • 23. Why is it important to control weeds around kohlrabi?
A) Weeds attract beneficial insects
B) Weeds help retain soil moisture
C) Weeds compete for nutrients and water
D) Weeds improve soil aeration
  • 24. How can you control cabbage white butterflies?
A) Lack of fertilizer
B) Netting
C) Planting in shade
D) Overwatering
  • 25. Why might kohlrabi bulbs split?
A) Too little sunlight
B) Inconsistent watering
C) Too much fertilizer
D) Lack of nutrients
  • 26. What is a good source of fertilizer for kohlrabi?
A) Composted manure
B) Gasoline
C) Bleach
D) Motor oil
  • 27. How does hilling around the base of the kohlrabi help?
A) Discourages root growth
B) Reduces sunlight exposure
C) Provides support and encourages root growth
D) Attracts pests
  • 28. Which part of the kohlrabi provides the most Vitamin C?
A) Both bulb and leaves
B) The bulb
C) Neither part
D) The roots
  • 29. Which planting method is suitable for Kohlrabi?
A) Only direct sowing
B) Direct sowing and transplanting
C) Air layering
D) Only transplanting
  • 30. What is the impact of boron deficiency in Kohlrabi plants?
A) Hollow stem
B) Stunted growth
C) Root rot
D) Yellow leaves
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