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How to Identify and Classify Dogwood Trees
Contributed by: Crossley
  • 1. What is the most distinguishing characteristic of most flowering dogwoods?
A) Alternate leaf arrangement.
B) Four showy bracts surrounding tiny, inconspicuous flowers.
C) Smooth, gray bark.
D) Palmately compound leaves.
  • 2. What is the typical leaf arrangement of a dogwood tree?
A) Opposite
B) Alternate
C) Whorled
D) Basal
  • 3. What is the typical shape of dogwood leaves?
A) Triangular
B) Round
C) Needle-like
D) Oval to elliptical
  • 4. What is a bract?
A) A specialized root structure.
B) A true petal of a flower.
C) A type of fruit.
D) A modified leaf that resembles a petal.
  • 5. What color are the typical 'flowers' (bracts) of a flowering dogwood?
A) Blue or purple
B) White or pink
C) Yellow or orange
D) Green or brown
  • 6. What type of fruit does a dogwood tree produce?
A) Pome
B) Drupe
C) Berry
D) Capsule
  • 7. What is the color of the fruit of a flowering dogwood?
A) Bright red
B) Green
C) Yellow
D) Black
  • 8. In what season does the flowering dogwood typically bloom?
A) Summer
B) Autumn
C) Winter
D) Spring
  • 9. What bark characteristic is often present on mature flowering dogwood trees?
A) Spiny bark
B) Smooth, papery bark
C) Alligator hide pattern
D) Deeply furrowed bark
  • 10. What is the primary habitat of flowering dogwood?
A) Understory of deciduous forests
B) Coniferous forests
C) Open meadows
D) Swamps
  • 11. What is a common disease that affects dogwood trees?
A) Pine beetle infestation
B) Dutch elm disease
C) Oak wilt
D) Dogwood anthracnose
  • 12. Which dogwood species is known for its blue-purple berries?
A) Red Osier Dogwood (Cornus sericea)
B) Kousa Dogwood (Cornus kousa)
C) Flowering Dogwood (Cornus florida)
D) Silky Dogwood (Cornus amomum)
  • 13. Which of these is NOT a characteristic used for dogwood identification?
A) Leaf shape
B) Fruit color
C) Bark texture
D) Root depth
  • 14. What is the scientific name for the Flowering Dogwood?
A) Acer rubrum
B) Quercus alba
C) Pinus strobus
D) Cornus florida
  • 15. Which dogwood species has bracts that are more pointed than rounded?
A) Kousa Dogwood (Cornus kousa)
B) Silky Dogwood (Cornus amomum)
C) Red Osier Dogwood (Cornus sericea)
D) Flowering Dogwood (Cornus florida)
  • 16. What is the typical size of a mature flowering dogwood tree?
A) 15-30 feet
B) 100+ feet
C) 50-75 feet
D) 5-10 feet
  • 17. The veins in a dogwood leaf typically curve toward the...
A) Petiole
B) Tip
C) Midrib
D) Base
  • 18. What is the growth habit of the Red Osier Dogwood?
A) Groundcover
B) Vine
C) Multi-stemmed shrub
D) Single-trunk tree
  • 19. The Red Osier Dogwood is most easily identified in winter by its...
A) Large thorns
B) Cones
C) Bright red stems
D) Persistent leaves
  • 20. What is the USDA hardiness zone range for flowering dogwood?
A) 1-3
B) 5-9
C) 10-12
D) 3-6
  • 21. Kousa Dogwood bracts appear...
A) After the leaves emerge.
B) Simultaneously with leaf emergence.
C) Only if the tree is under stress.
D) Before the leaves emerge.
  • 22. Which dogwood has the largest bracts?
A) Flowering Dogwood (Cornus florida)
B) Pacific Dogwood (Cornus nuttallii)
C) Red Osier Dogwood (Cornus sericea)
D) Kousa Dogwood (Cornus kousa)
  • 23. What is the term for the stalk that attaches the leaf to the stem?
A) Blade
B) Petiole
C) Lenticel
D) Midrib
  • 24. What is the term for the edges of a leaf?
A) Base
B) Margin
C) Vein
D) Apex
  • 25. What type of wood is dogwood wood?
A) Brittle and easily broken
B) Very hard and dense
C) Flexible and bendable
D) Soft and lightweight
  • 26. What is a common use for dogwood wood historically?
A) Paper pulp
B) Shuttlecocks for weaving
C) Roofing shingles
D) Fuel for heating
  • 27. What is a key difference between the fruit of Kousa Dogwood and Flowering Dogwood?
A) Kousa Dogwood fruit is edible and fleshy, Flowering Dogwood fruit is not generally eaten.
B) Kousa Dogwood fruit is larger than Flowering Dogwood fruit.
C) Flowering Dogwood fruit is blue, Kousa Dogwood fruit is red.
D) Only Flowering Dogwood produces fruit.
  • 28. Which of the following is a cultivar of flowering dogwood known for its red bracts?
A) Argenteomarginata
B) Rubra
C) Pendula
D) Alba
  • 29. Which dogwood variety is most tolerant of full sun conditions?
A) Flowering Dogwood
B) Red Osier Dogwood
C) Silky Dogwood
D) Kousa Dogwood
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