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