Guide · 7 min read

Measure direct sun where the crop will grow

A repeatable Canadian method that separates direct light from brightness, long summer daylight and a regional assumption.

Editorial guidance without independent agronomic review

Garden containers observed through changing bands of direct sun and shade during the day.
Guide at a glance
  1. Fix the pointObserve the final planting position.
  2. Mark intervalsCount only direct sunlight.
  3. Use a bandRepeat by season instead of claiming false precision.

Fix the point before counting

Observe at the height and exact position of future leaves. A balcony overhang, fence, tree, neighbouring building or crop row can change exposure within a few metres.

Count direct sunlight only

Record intervals when direct sun reaches the point and forms a clear shadow. Bright sky, reflected snow or glass and long daylight do not equal continuous direct sun.

Add separate intervals instead of treating morning and evening brightness as one block.

Repeat during the actual season

Sun angle, deciduous leaves, snow, new structures, shade material and the crop canopy change exposure. Repeat after a meaningful seasonal or site change.

Use a conservative band

One clear day or phone reading does not establish a permanent threshold. If the result lies near a planner boundary, choose the lower band and observe the plant response.

Sources, scope and limits

Sources support the stated context. They do not turn a broad guide into individualized advice or transfer rights to reproduce the original material.

  • Canada English home food garden editorial synthesis — version 1

    Global Garden Planner

    Original eight-profile model, planting bands and en-CA corpus. It remains an editorial draft until independent Canadian agronomic review is recorded.

    Editorial role: internal synthesis · Rights position: Original project content · Accessed: August 3, 2026

    Open source

  • Assessing sunlight

    Gardening at USask, University of Saskatchewan

    Supports direct observation of sun at the final position. Project crop thresholds and guide wording remain original editorial values pending review.

    Editorial role: fact reference · Rights position: Copyright source used only as a linked factual reference; no article text, chart, image or thresholds table is reproduced · Accessed: August 3, 2026

    Open source

  • Canadian Climate Normals 1991–2020

    Environment and Climate Change Canada

    Supports distinguishing climate averages from a current forecast and recognizing large local variation. The package does not ingest ECCC data or derive month bands from station values.

    Editorial role: fact reference · Rights position: Government page linked and paraphrased for high-level context; no normal, station row, CSV, map or data product is copied or transformed · Accessed: August 3, 2026

    Open source