CLA Plant Materials & Horticulture Flashcards
6 cards from real CLA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CLA Plant Materials & Horticulture flashcards as text
Which USDA Plant Hardiness Zone covers most of the US Gulf Coast, including southern Louisiana and Mississippi?
Answer: Zone 9a
Zone 9a (average minimum −6.7°C / 20°F) covers much of the Gulf Coast where mild winters allow subtropical plants to thrive.
What is the botanical name for Eastern Redbud, a commonly specified native flowering tree in the eastern US?
Answer: Cercis canadensis
Cercis canadensis is Eastern Redbud, known for its magenta spring flowers directly on bare branches before leaf-out.
A plant specification calls for '3" Cal.' What does 'Cal.' indicate on a plant schedule?
Answer: Caliper (trunk diameter) measured 6 inches above grade
Caliper refers to the trunk diameter of nursery trees, measured 6 inches above the ground for trees up to 4-inch caliper.
Which soil pH range is generally considered optimal for most landscape plants?
Answer: 5.5–6.5
Most landscape plants grow best at pH 5.5–6.5 where nutrient availability is highest and soil biology is most active.
What does the term 'B&B' mean when specifying trees on a planting plan?
Answer: Balled and burlapped
Balled and burlapped (B&B) trees are field-grown with a soil root ball wrapped in natural burlap for transplanting.
Which plant characteristic is described as 'stoloniferous'?
Answer: Spreads by horizontal above- or below-ground runners
Stoloniferous plants produce stolons — horizontal stems (above or at soil level) that root at nodes to spread vegetatively.