Know Your Space: Site Assessment and Planning

Stand in your garden—yes, right now, even if it's just a collection of sad potted plants on a fire escape—and look around. What do you actually see? Most of us glance at our outdoor spaces a hundred times without really *seeing* them. We know there's a sunny spot near the fence and a shadier corner by the wall, but when pressed for specifics, we shrug and say "it gets good light." That vagueness costs us every single season. A tomato plant that needs six hours of direct sun gets planted in a spot that delivers only four. A shade-loving hosta gets scorched in an exposed bed. The lettuce bolts before we've harvested more than a handful of leaves. These aren't mysterious failures—they're predictable outcomes of a predictable cause: we never took the time to truly understand what our space was telling us.

This chapter is about learning that language. Before you buy a single seed or dig a single hole, you're going to learn how to read your garden the way a seasoned farmer reads the sky before planting. You'll discover how to track the sun's daily journey across your space, identify those peculiar microclimates where temperature and moisture create unexpected growing conditions, assess the invisible infrastructure of drainage and wind, and ultimately create a comprehensive site profile that will inform every decision you make from this point forward. This isn't busywork—it's the foundation everything else will be built upon. And yes, it requires patience. You'll need to observe your space over the course of a full week, noting patterns that shift with the hours and seasons. But I promise you, by the time you finish this chapter, you'll know your garden better than you know your favorite room in your house.

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The Sun: Your Garden's Most Precious Resource

Let's start with the obvious: light is life. Almost every edible plant you might want to grow—tomatoes, peppers, squash, beans, strawberries, cucumbers, herbs—is fundamentally a sun-seeking organism. They convert light energy into chemical energy through photosynthesis, and the amount of light they receive directly correlates to how vigorously they grow and how abundantly they fruit. Understanding your light situation isn't optional if you want any real success in the garden.

Decoding Sunlight Terms

Before you start observing, let's clarify what gardeners mean when they talk about sun exposure. These terms get thrown around casually, but they have specific meanings that matter for plant selection:

Full sun means six or more hours of direct sunlight hitting the area during the peak growing season (roughly May through September for most temperate regions). This doesn't need to be continuous—your plants don't mind a lunch break in the shade—but the total needs to add up to at least six hours. Full sun plants are the most demanding in terms of light, and they're the ones most likely to disappoint you if you skimp on their requirements.

Partial sun or partial shade describes situations where plants receive three to six hours of direct sun, or are shaded during part of the day. The distinction between these two terms is subtle but meaningful: partial sun usually implies the plant can handle a bit more direct light and might actually suffer if kept too shaded, while partial shade plants often prefer relief from the harsh afternoon sun and may scorch in hot, direct afternoon exposure.

Full shade doesn't mean no light at all—it means the area receives fewer than three hours of direct sunlight per day, or is mostly illuminated by indirect, diffused light. Many shade-tolerant plants actually need *some* direct sun, particularly in the morning when it's gentler. True full shade conditions (like under dense evergreen canopy or on the north side of a tall building with no reflected light) limit you to a specific set of plants, but that set includes some wonderful edibles like certain herbs, leafy greens, and mushrooms.

Your Week-Long Sun Observation Protocol

Now for the practical work. You'll need a week where you can be home at various times—weekends work well, but any seven consecutive days will do. Set alarms if you must, but you're going to walk your space at specific times and record what you see. Here's the schedule:

Morning (8-9 AM): Note which areas receive direct sunlight. Are the plants already warm to the touch? Is there dew still clinging to leaves, or has it already evaporated? Morning sun is gentler and particularly valuable for plants that might scorch in afternoon heat.

Mid-morning (10-11 AM): Check again. Has the sun's angle shifted enough to light new areas? Are there spots that were promising at 8 AM now shaded by buildings, fences, or the shadow of a mature tree?

Midday (12-1 PM): This is peak sun intensity in most regions (though not all—your latitude matters). Document which areas are baking. The difference between a spot that feels "warm" and one that's genuinely "hot" becomes obvious around noon in summer.

Early afternoon (2-3 PM): Many urban gardens have their hottest conditions at this point, as accumulated heat from the morning peaks. Plants like tomatoes may drop their flowers if temperatures climb too high and they experience heat stress.

Late afternoon (4-5 PM): Check for shade patterns. Trees, structures, and buildings cast longer shadows as the sun descends. This is when you might discover that your "full sun" bed actually loses light at 4 PM when the neighbor's oak tree finally shades it.

Evening (6-7 PM): One final observation before the day ends. Some plants benefit from cooling down in late afternoon shade, while others need every scrap of available light.

Repeat this process for seven consecutive days. Weather varies—some days will be overcast, and that's actually useful information too. A space that seems adequately sunny on Monday might reveal itself as problematic when Tuesday brings clouds and you realize it depends entirely on direct rays rather than ambient light. Record your observations in a notebook, or use a smartphone to take photos from the same positions each day. Timestamped photos are incredibly valuable because they let you compare conditions across different dates and times.

Creating Your Sun Map

After a week of observations, synthesize your data into a simple sun map. You don't need fancy software or artistic skills—a rough sketch showing your space's boundaries, major structures, and significant plants will do. Using colored pencils or digital drawing tools, shade in the areas based on their sun exposure:

```mermaid graph LR A[Full Sun<br/>6+ hours] --> B[Mark in YELLOW] A --> C[Partial Sun<br/>3-6 hours] C --> D[Mark in LIGHT ORANGE] A --> E[Partial Shade<br/>Filtered light] E --> F[Mark in LIGHT GREEN] A --> G[Full Shade<br/><3 hours] G --> H[Mark in DARK GREEN] ```

Fill in each zone clearly. You might find that your space has three or four distinct light zones depending on the architecture and surrounding structures. A small urban garden might have a tiny full-sun strip along the south-facing wall, a broader partial-shade area in the middle, and a deeply shaded strip along the north fence where a neighbor's mature tree creates permanent canopy. These distinctions matter enormously when you're deciding what to plant where.

Don't forget to consider seasonal variation. The sun sits lower in the sky during spring and fall, casting longer shadows than in summer. That sunny corner that looks perfect in August might spend half of March in the shadow of your house. If you plan to grow cool-season crops like lettuce, spinach, or peas in spring or fall, map your light situation for *those* seasons, not just summer. Many gardeners discover that their "shady" winter garden is actually quite sunny once the deciduous trees drop their leaves and the sun hangs lower.

Reflected light matters too. A white-painted wall can bounce meaningful light into a north-facing space,