Plant Selection, Botany and Plant Selection
Successful planting begins with matching the plant to the site, not the other way around. Candidates must understand the environmental factors that drive plant performance: climate (hardiness zone, frost, heat), light (full sun, part shade, deep shade), soil (texture, pH, drainage, salinity), water availability, wind exposure and microclimate. Botanical knowledge underpins this: photosynthesis and respiration, transpiration and stomatal control, photoperiodism, vernalisation, plant hormones (auxins, gibberellins, cytokinins, ethylene, abscisic acid), and the difference between C3, C4 and CAM pathways. Understand plant form and function: root types (taproot, fibrous, adventitious), vascular tissue (xylem up, phloem down), and how these affect transplant success and drought tolerance.
Traps: choosing plants for looks alone; ignoring mature size and root spread; assuming a plant labelled 'drought tolerant' will establish without watering; and confusing shade tolerance with shade preference. Questions often test whether a plant suits a position, so read the site conditions carefully. Another trap is mistaking pH preference for pH tolerance.
Worked rule of thumb: use the 'right plant, right place' checklist - climate match, light match, soil match, water match, space match, and maintenance match. If any one fails, choose a different plant rather than planning to fix the site later. For natives, remember provenance matters: local genetics usually establish better than distant ones.