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