Landscaping in Alabama presents unique opportunities and challenges because of its humid subtropical climate, strong summer sun, and a mix of deciduous and evergreen trees. Accurately mapping sun and shade zones on your property is the single most important step before selecting plants, positioning patios, or planning irrigation. A clear map saves money, reduces plant failures, and helps you create outdoor spaces that perform well throughout the year.
This article walks you through why mapping matters in Alabama, the tools to use, and a step-by-step process for creating a reliable sun and shade map that accounts for seasonal change and microclimate effects. Practical takeaways and plant-selection guidance tailored to Alabama conditions are included so you can turn mapping into action.
Alabama has hot, humid summers, mild winters, and large seasonal differences in sun angle. These conditions mean a planting that thrives in spring and fall can struggle in midsummer if it ends up in a high-heat, full-sun location. Mapping lets you match plants to actual site conditions rather than assumptions.
A precise map will:
Alabama summers have high solar intensity and frequent afternoon thunderstorms. In winter the sun angle drops substantially, so southern exposures gain valuable sunshine. Deciduous trees cast dense summer shade but allow winter sunlight to reach the ground after leaf drop. When mapping, always consider both the high-sun summer condition and the low-sun winter condition to make planting decisions that work year-round.
Microclimates in Alabama yards are common. Examples:
A good map documents these microclimates so you can leverage them–plant heat-loving species near reflective walls, and shade-loving groundcovers under dense canopies.
Start with a scaled outline of your house, driveway, fences, major trees, and existing beds. You do not need a professional survey for landscape mapping–measure main distances and sketch them to scale on graph paper (for example, 1 square = 2 feet). If you prefer digital, import a satellite image and draw overlays.
Mark structures, mature trees (note species if known), large shrubs, and fences that cast shade year-round. For trees, note whether they are evergreen or deciduous because deciduous trees change shade patterns seasonally.
Choose one clear day in late spring or summer for the initial survey–this is when you’ll see the longest shade extent from trees and structures. If possible, repeat observations near the winter solstice to understand low-sun patterns. On the chosen day, record direct-sun hours across the yard by visiting each zone at set intervals (for example, 9 a.m., 12 p.m., 3 p.m., and 6 p.m.). Stand in each potential planting area, note whether the sun is direct or shaded, and take a photo with a timestamp.
Break the property into manageable zones–use a 3×3 or 5×5 grid pattern depending on yard size. Smaller grids yield more precision. Assign each grid cell a unique identifier and record observations per cell: hours of direct sun, morning vs. afternoon sun, and whether shade is dappled or deep.
Use common categories:
– Full sun: 6 or more hours of direct sunlight per day.
– Part sun / part shade: 3 to 6 hours of direct sun.
– Shade: Less than 3 hours of direct sun.
– Dappled shade: Variable direct light through foliage, often favorable for many woodland plants.
Assign one of these classifications to each grid cell based on your timed observations and photos.
For every zone record soil moisture behavior (dry, average, wet), slope (north/south-facing slope warms differently), and nearby reflective surfaces (driveways, metal roofs). Also note prevailing wind direction and sites that are sheltered because wind and moisture interact with sun exposure to determine plant performance.
Transfer your zone classifications and notes onto the base map. Use colored pencils or digital overlays to make the distinctions clear: one color for full sun, another for part sun, and a third for shade. Add symbols for trees, structures, and water features. Include notes for seasonal changes like “summer shade from oak canopy; winter sun after leaf drop.”
Return on a few different days and seasons to confirm your map, especially after trees leaf out or pruning. Update the map any time you add major structures, plant large trees, or change hardscape that alters light patterns.
Match plants to actual exposure rather than the assumed exposure. In Alabama:
Design decisions:
A sun and shade map is a living document. Trees grow, new construction happens, and microclimates shift. Review and update your map every 2-3 years or after any major change. Keep notes about plant performance tied to the map: which areas stayed moist or dried out, which plants struggled in high summer, and where transplanted specimens thrived after moving. These field notes are invaluable for refining the map and improving success over time.
Mapping sun and shade is an investment of time that pays off through lower plant mortality, smarter water use, and better placement of structures and garden rooms. In Alabama, where summers are intense and microclimates are common, a careful map will help you design landscapes that look good and perform reliably through heat, humidity, and seasonal change.