Selection, planting and design with hardy nursery stock for amenity and landscape purposes — SEG Awards Occupational Qualification Horticulture & Land Management Revision
This element focuses on the integrated process of selecting, planting, and establishing hardy nursery stock to achieve successful amenity and landscape out
Topic Synopsis
This element focuses on the integrated process of selecting, planting, and establishing hardy nursery stock to achieve successful amenity and landscape outcomes. It covers tree identification, nursery production methods, stock selection based on site constraints and design intent, and the critical phases of handling, planting, and post-planting care necessary for long-term tree independence and vitality.
Key Concepts & Core Principles
- Tree Biology and Physiology: Understanding tree anatomy, growth processes, and how trees respond to environmental stresses and management practices.
- Soil Science and Root Management: Knowledge of soil types, nutrient cycling, and root architecture to assess tree stability and health.
- Tree Risk Assessment: Proficiency in using recognised systems (e.g., QTRA, TRAQ) to evaluate and mitigate tree-related hazards.
- Legislation and Policy: Familiarity with UK laws including TPOs, Conservation Areas, and the Wildlife and Countryside Act 1981 as they apply to tree work.
- Tree Surveying and Report Writing: Skills in conducting systematic tree surveys, recording data, and producing professional reports for clients or authorities.
Exam Tips & Revision Strategies
- In design scenarios, always reference species selection against recognized arboricultural standards (e.g., BS 8545:2014 Trees: from nursery to independence) to demonstrate professional methodology.
- When answering questions on stock selection, explicitly mention stock type advantages/limitations and delivery inspection criteria (e.g., check for root circling, desiccation).
- For practical assessments, prepare a concise site assessment checklist covering soil, light, space, and services, and articulate how each factor influenced your planting design.
- Use photographic evidence and annotated records for post-planting care to provide robust proof of ongoing maintenance and monitoring.
Common Misconceptions & Mistakes to Avoid
- Confusing common names with botanical nomenclature, leading to incorrect species identification or supply errors.
- Selecting species solely for aesthetic appeal without considering long-term mature dimensions, resulting in future conflicts with infrastructure.
- Planting too deeply, burying the root flare, which causes stem rot and long-term decline.
- Using rigid staking that prevents natural trunk taper development, leading to instability as the tree matures.
- Inadequate post-planting irrigation regimes, assuming rainfall will suffice during the critical establishment phase.
Examiner Marking Points
- Award credit for demonstrating accurate use of a botanical key and correct application of binomial nomenclature when identifying at least five tree/shrub species in coursework evidence.
- Look for justification of species selection against specific site conditions (e.g., soil pH, exposure, ultimate size) and design requirements, referencing current industry guidance such as BS 8545.
- Assess candidate’s ability to specify appropriate nursery stock types (e.g., bare-root, container, root-balled) and sizes for given scenarios, explaining handling and delivery checks.
- Evidence of thorough site preparation planning, including soil amelioration, drainage, and protection from compaction, aligned with BS 3998.
- Marks should be allocated for detailed planting method descriptions (pit dimensions, root collar placement, staking) and a schedule of post-planting care (irrigation, mulching, formative pruning) up to establishment.