How To Make A Sun Map Of Your Garden | Fast Sun Layout

When you learn how to make a sun map of your garden, you stop guessing where tomatoes, roses, or hostas belong and start planting with confidence. A simple sketch, a phone camera, and a free afternoon are enough to chart the light patterns that shape every bed and border right in your own space today.

Why A Sun Map Matters For Garden Planning

Plants care about hours of direct light, not just whether a space looks bright. A corner that seems sunny at noon might spend most of the day in shadow from a fence or a tree. A sun map turns those shifting patches of sun and shade into clear notes you can trust when you plan beds, paths, and seating areas.

Light Level	Hours Of Direct Sun	Plant Examples
Full Sun	6 or more hours	Tomatoes, peppers, sunflowers
Part Sun	4 to 6 hours	Roses, many herbs, berries
Part Shade	3 to 6 hours, mostly morning	Hydrangeas, astilbe, ferns
Light Shade	2 to 4 hours filtered sun	Heuchera, hosta, foxglove
Full Shade	Less than 2 to 3 hours	Ferns, lungwort, woodland plants
Hot Afternoon Sun	Strong light after midday	Lavender, yarrow, ornamental grasses
Cool Morning Sun	Sun only before midday	Many leafy greens, shade lovers at the edge of beds

Research from extension programs confirms that full sun usually means at least six hours of direct light, with shade classes below that range. Guidance such as the planting in sun or shade overview from Penn State Extension follows these same bands and can back up the labels you see at nurseries.

Sun Mapping Your Garden For Clear Light Patterns

A sun map is a drawing of your space, marked with how many hours of direct light each section receives. You can keep it loose and hand drawn or build a scaled plan on a tablet; the method that suits you is the one you will update over time.

Pick The Right Day And Simple Tools

The best time to track light is close to the main growing season, usually late spring or summer. Choose a bright day with few clouds so you see the true pattern of sun and shade. You will need a sketch of your garden, a pencil, colored pens, and either a watch or phone alarms to remind you to check the beds.

Many gardeners set alarms every one or two hours between early morning and early evening. Each alarm becomes a prompt to step outside, scan the space, and note which zones sit in sun, part sun, or shade at that moment.

Sketch A Base Map Of Your Garden

Start with a rough outline of the whole area you want to map. Mark fixed features such as the house, shed, trees, fences, paths, decks, and existing beds. Divide the garden into simple blocks or zones that are small enough for you to label, like “patio bed” or “north border.”

Record Sun And Shade Through The Day

Stand in the same spots each time your alarm rings. For every zone on your map, decide whether it is in full sun, part sun, part shade, or full shade right now. Use one color for sun, another for part sun, and a third for shade. You are not chasing perfect science; you are building a realistic pattern you can rely on when you choose plants later.

Details like fences, neighboring buildings, or tall shrubs can change light more than you expect, so it helps to jot short notes beside tricky areas.

Add Up The Hours Of Light

By late afternoon or evening, count how many check times each zone spent in direct sun. If you checked every two hours from 8 a.m. to 6 p.m., you logged six data points. Four or more sunny checks might equal full sun, two or three checks might mean part sun, and fewer than that may point to part shade or full shade.

Use the light level bands in your table as a yardstick. Many guides, such as the sunlight assessment guide from Alabama Extension, show the same hour ranges and suggest using phone photos with time stamps to support your notes.

Turn Notes Into A Clean Sun Map

Once you have totals, redraw the garden on a fresh sheet. Shade in each zone based on its category, using one color for full sun, another for part sun, and cooler tones for shade. Label each area with both the color and the words so the map stays clear when you look at it months later.

This clean version is your working sun map. Keep one copy near your seed boxes and another close to any design sketches. Whenever you doubt where a plant should go, check the map and match the tag on the plant to a zone with suitable light.

How To Make A Sun Map Of Your Garden Step By Step

If you like a clear checklist, this section walks through the mapping steps in compact action form.

Watch, Draw, And Divide

Begin with a quiet day of watching. Walk the garden in the morning, at midday, and in late afternoon. Notice hot spots by walls, cooler corners under trees, and narrow strips along paths. Take photos from the same standing spots each time so you can compare shadows later.

That evening, draw the house, boundaries, and main features. Slice the area into blocks based on how you use the space. You might divide along beds, lawns, and paths, or split big lawns into smaller rectangles so you can assign different plants, shrubs, or seating areas later.

Track, Color, And Label

On another day, set an alarm for every hour you are home. At each ring, step outside, look at every zone, and mark S for sun or Sh for shade at that moment. By evening, you will have a row of notes for each zone that tells you where light lingers and where shade takes over.

Use those notes to decide how many hours of light each zone receives, then color in the base map or a new copy. Once the map is colored, write short labels such as “full sun veggie bed” or “afternoon shade border.” The finished map shows, at a glance, which spots suit heat loving crops and which spots protect tender foliage.

Use Your Garden Sun Map To Place Plants

A finished map does more than tell you where the bright spots sit. It guides planting decisions, from fruit trees to balcony pots. When you match a plant’s light needs to a zone that offers that light, care becomes easier and losses shrink.

Match Vegetables And Herbs To Full Sun Zones

Most fruiting vegetables, such as tomatoes, peppers, squash, and beans, respond best in full sun. Herbs like basil, thyme, and rosemary also enjoy long hours of direct light. Mark one or two of your brightest zones as the main food beds and keep tall crops where they will not cast late day shade over shorter neighbors.

Use Part Sun For Flowers And Soft Fruit

Roses, many annual flowers, and berries like currants or raspberries often handle part sun or part shade. Use zones with four to six hours of direct light, especially spots with gentle morning sun and a break from the harshest afternoon rays.

Reserve Shade For Foliage Stars

Zones that never see long stretches of direct sun can still shine. Hostas, ferns, heuchera, and many woodland plants bring texture and color to the dimmest corners. Mark these areas clearly on your sun map so you stop wasting sun lovers in spots that suit shade fans far better.

Sample Garden Zones And Plant Ideas

The second table shows how a few sample zones on a sun map can turn into clear planting choices. Adjust the plants and zone names to match your own plot, but keep the link between hours of light and plant choice.

Zone Name	Light Category	Plant Ideas
South Patio Bed	Full Sun	Tomatoes, peppers, bush beans, zinnias
East Fence Border	Part Sun	Roses, dahlias, raspberries, herbs
Under Maple Tree	Full Shade	Hostas, ferns, lungwort, spring bulbs
North Wall Strip	Part Shade	Hydrangeas, foxglove, heuchera
Veggie Raised Beds	Full Sun	Leafy greens, carrots, beets, onions
Shady Corner Seat	Light Shade	Containers of coleus, ferns, begonias
Driveway Edge	Hot Afternoon Sun	Lavender, sedum, ornamental grasses

Keep Your Sun Map Updated Through The Seasons

Light never stays fixed. Trees grow slowly, hedges thicken, neighbors add sheds or tall play structures, and seasons slide past. A sun map holds its value when you refresh it from time to time, especially after big changes such as roof work, tree pruning, or new fences.

Make a quick habit of checking your map at the start of each main planting season. Take a short walk, compare what you see on the ground with what the map shows, and adjust the colors or labels when they no longer match. Over a few years, you build a record of how light moves across your garden, and every new bed or container layout becomes easier to plan.

Whether you garden on a balcony, in a tiny courtyard, or across a wide yard, learning how to make a sun map of your garden gives you a repeatable way to match plants to the light they need. That quiet bit of homework often brings stronger plants, better home harvests, and fewer disappointments.