Happy Birthday Catherine!

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Across
  1. 2. National tree of Lebanon
  2. 5. Desert plant with spines instead of leaves
  3. 8. Pruning hedges into ornamental forms
  4. 10. Soil enrichment from decomposed organic matter
  5. 13. Season when trees shed leaves
  6. 14. Decorative pond fish often found in Asian gardens
  7. 16. Material often used in retaining walls
  8. 17. Broad, grassy outdoor area
  9. 18. Tree known for its acorns
  10. 19. Garden style emphasizing minimalism
  11. 20. Pathway material often used in gardens, made of small stones
Down
  1. 1. Scientific study of plants
  2. 3. Leaf veins branching like a net
  3. 4. Outdoor seating space, sometimes paved
  4. 6. Landscape design principle emphasizing balance
  5. 7. Japanese art of growing miniature trees in containers
  6. 9. Artificial water feature with jets or cascades
  7. 11. Plant that lives for more than two years
  8. 12. Garden structure with climbing plants
  9. 15. Circular planting bed, often in driveways