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How to Cultivate Plums
Contributed by: Webster
  • 1. What type of climate is generally best for growing plums?
A) Temperate
B) Tropical
C) Desert
D) Arctic
  • 2. What is the ideal soil pH for plum trees?
A) 6.0-7.0
B) 4.0-5.0
C) 7.5-8.5
D) 8.5-9.5
  • 3. Plum trees need how many hours of chill hours (below 45°F) for proper fruit production?
A) Varies by variety
B) None
C) 1000+
D) 0-100
  • 4. Which of the following is the MOST important factor when choosing a plum tree variety?
A) Tree height
B) Leaf shape
C) Fruit color
D) Climate suitability
  • 5. What is the best time of year to plant bare-root plum trees?
A) Late fall
B) Mid-summer
C) Late winter/early spring
D) Anytime
  • 6. What spacing is recommended for planting standard-sized plum trees?
A) 15-20 feet
B) 30-40 feet
C) 2-3 feet
D) 5-10 feet
  • 7. What is the primary purpose of staking a young plum tree?
A) Prevent diseases
B) Increase fruit yield
C) Attract pollinators
D) Provide support
  • 8. During the first year, how often should a newly planted plum tree be watered?
A) Regularly, when topsoil is dry
B) Only during rainfall
C) Once a month
D) Daily
  • 9. Why is it important to prune plum trees?
A) To make the tree look aesthetically pleasing only
B) To promote air circulation and fruit production
C) To stunt growth
D) To discourage fruit production
  • 10. What type of pruning cut encourages new growth outward?
A) Cutting randomly
B) Cutting to an inward-facing bud
C) Removing all buds
D) Cutting to an outward-facing bud
  • 11. What is 'thinning' in the context of plum tree care?
A) Removing excess fruit
B) Removing excess leaves
C) Removing branches
D) Adding fertilizer
  • 12. Why is thinning plums important?
A) To increase the number of plums
B) To prevent the tree from growing too tall
C) To improve fruit size and quality
D) To attract more birds
  • 13. Which of the following is a common pest of plum trees?
A) Ladybugs
B) Butterflies
C) Earthworms
D) Plum curculio
  • 14. Which of the following is a common disease of plum trees?
A) Brown rot
B) Powdery mildew
C) Black spot
D) Green leaf disease
  • 15. What is one organic method to control plum curculio?
A) Gasoline
B) Bleach spray
C) Kaolin clay spray
D) Ignoring the problem
  • 16. What type of fertilizer is generally recommended for plum trees?
A) Balanced fertilizer
B) High nitrogen fertilizer
C) Weed killer
D) No fertilizer
  • 17. When should you fertilize plum trees?
A) Early spring
B) Late fall
C) Mid-summer
D) Winter
  • 18. What is the purpose of mulching around a plum tree?
A) Suffocate the roots
B) Prevent pollination
C) Retain moisture and suppress weeds
D) Attract pests
  • 19. What type of mulch is best for plum trees?
A) Gravel
B) Plastic mulch
C) Organic mulch like wood chips
D) Rocks
  • 20. How can you tell when a plum is ripe?
A) Completely green
B) Slightly soft to the touch and easily pulls from the tree
C) Falls off the tree easily
D) Hard as a rock
  • 21. What is grafting?
A) Removing dead branches
B) Joining two plants together
C) Adding fertilizer
D) Watering deeply
  • 22. Why is grafting sometimes used in plum cultivation?
A) To combine desirable traits
B) To kill the tree
C) To prevent fruit production
D) To make the tree taller
  • 23. What does 'self-pollinating' mean for a plum tree?
A) It's resistant to all pests
B) It can produce fruit without another plum tree
C) It needs constant watering
D) It only produces green plums
  • 24. What is cross-pollination?
A) Pollination between a plum and an apple tree
B) Pollination using only wind
C) Self-pollination
D) Pollination between two different plum varieties
  • 25. How can you improve pollination for plum trees?
A) Planting pollinator-attracting plants
B) Keeping bees away
C) Removing all flowers
D) Spraying pesticides
  • 26. What is the first step you should take if you notice a disease on your plum tree?
A) Over-water the tree
B) Ignore it and hope it goes away
C) Immediately cut down the tree
D) Identify the disease
  • 27. What is the best way to store harvested plums?
A) In a warm, humid place
B) In direct sunlight
C) Refrigerated
D) Frozen immediately
  • 28. How long does it typically take for a newly planted plum tree to produce fruit?
A) 3-6 years
B) 1 year
C) Never
D) 10+ years
  • 29. What is the purpose of dormant oil spray on plum trees?
A) To attract more birds.
B) To speed up fruit production.
C) To make the leaves shiny.
D) To control overwintering pests and diseases.
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