Planting design Study Guide

📖 Core Concepts Garden design – the art & planning of layout, hardscape, and plant (softscape) selection to meet user goals. Hardscape vs. Softscape – hardscape = paths, walls, water, decks; softscape = living plants. Site analysis – evaluate topography, soil type, climate, microclimates, and boundaries before design. Plant selection criteria – seasonality, lifespan, growth habit, size, speed, compatibility, maintenance needs. Phototropism – directional growth of stems/leaves toward (positive) or away (negative) from light. Photoperiodism – plant response to day‑length; controls flowering & dormancy. Design styles – formal (rectilinear, axial), informal/naturalistic, contemporary (minimalist), native, rock, kitchen/potager, East Asian, etc. 📌 Must Remember Hardscape first – layout paths, walls, water features before planting. Soil amendment choice depends on existing texture (clay, sand, loam) and pH. Boundaries serve security, privacy, wind shelter, and visual screening. Sunlight management: if you cannot move the sun, select plants matched to the site’s light level. Formal garden hallmarks – axial lines, geometric parterres, topiary, reflective water. Native garden benefit – low inputs, supports local wildlife. Photoperiod categories – short‑day, long‑day, day‑neutral; dictates flowering time. 🔄 Key Processes Site Analysis Survey topography → note slopes, vistas, rock outcrops. Test soil texture & pH → decide amendment type & amount. Identify microclimates (sunny, shaded, wind‑exposed zones). Design Development Define garden use & desired style (formal, informal, etc.). Sketch hardscape layout respecting boundaries & connections to the house. Plan circulation paths and functional zones (seating, water). Planting Plan Creation List species with required soil, light, spacing, and growth habit. Schedule planting size & season; include maintenance tasks (pruning, mulching). Implementation & Maintenance Prepare soil (add compost, sand, peat as needed). Install hardscape, then plant according to spacing diagram. Follow maintenance schedule: prune, fertilize, replace seasonal plants. 🔍 Key Comparisons Hardscape vs. Softscape – built materials vs. living plants; hardscape sets structure, softscape adds texture & seasonal interest. Formal vs. Informal gardens – geometric, axial, topiary vs. naturalistic, flowing, mixed species groups. Native vs. Exotic plants – locally adapted, low‑maintenance vs. may need extra water/fertilizer & can become invasive. Phototropism vs. Photoperiodism – growth direction response to light intensity vs. flowering/dormancy response to day length. ⚠️ Common Misunderstandings “More soil amendment = better growth.” – Some plants thrive in poor soils; over‑amending can harm them. “All formal gardens must use hedges.” – Formality can be achieved with walls, water, or paved patterns alone. “Any lighting improves plant growth.” – Only appropriate intensity and spectrum aid photosynthesis; wrong placement can shade plants. “Hardscape is permanent.” – Many hardscape elements (gravel, wood chips) can be re‑graded or replaced. 🧠 Mental Models / Intuition “Skeleton‑Muscle‑Skin” model – hardscape = skeleton (structure), softscape = muscle (growth), surface materials = skin (appearance & feel). “Sun‑Shade Map” – imagine the garden as a clock; plot sun exposure by hour to quickly match plants to zones. “Scale‑Hierarchy” – start with large‑scale decisions (site, style) before moving to medium (hardscape) and finally small (plant spacing). 🚩 Exceptions & Edge Cases Alpine/rock garden plants often need excellent drainage; regular garden soil amendments may retain too much moisture. Evergreen hedges in hot, dry climates may require supplemental irrigation despite being “low‑maintenance.” Urban microclimates (heat islands) can shift hardiness zones by 1–2 °C, affecting plant survivability. 📍 When to Use Which Choose formal rectilinear planting for historic Renaissance or French garden themes. Opt for native species when budget or water is limited and wildlife support is desired. Use rock garden techniques on sloped, well‑drained sites with poor soil. Select contemporary minimalism when the client prefers clean lines and a limited plant palette. Deploy kitchen garden (potager) layout when the primary goal is food production with aesthetic patterning. 👀 Patterns to Recognize Repeating geometric units (squares, rectangles) → likely a potager or formal garden. Clustered low‑lying stones with gaps → classic rock garden design. Axial pathways leading to focal points → French formal garden. Mixed herbaceous perennials with annual vegetables → cottage‑style kitchen garden. Sparse planting with large stones → Japanese Zen garden. 🗂️ Exam Traps “All hedges are evergreen.” – Many hedges are deciduous; answer choices stating “evergreen only” are wrong. “Soil amendment is always required.” – Some plants need poor, unamended soils; look for “always” wording. “Phototropism controls flowering time.” – Confuses with photoperiodism; choose the option linking day length to flowering. “Contemporary gardens must exclude all ornamentals.” – Contemporary can use ornamental plants; the key is simplicity and repetition. “Hardscape never needs maintenance.” – Paths and walls need cleaning, repair, and sometimes resurfacing; any “no‑maintenance” claim is a distractor.