Conroe, Texas 30.31 N, 95.46 W
Backyard Sun Tracker
Seasonal shadows and planting guidance for this yard
v10 layout & field sun audit (July 22, 2026)
v10 note β the rotation: The food beds are now two columns along the NW wood fence (see the yard map). Column 1 (fence side): Main Bed (house end) flush end-to-end with Acid Bed (lake end). Column 2 (2.5 ft east of column 1): Berry Bed (house end, aligned with the Main Bed) + Acid Bed #2 (lake end). Acid Bed #2's cedar shell is built now with the others but parked under cardboard + wood chips; it gets its acid mix and plants in fall 2027.
Tomato row on the WEST fence edge: the only tall row sits on the west (fence-side) edge of the Main Bed, so its shadow falls north/northwest into the wood-chip working aisle β never onto other crops. Everything in column 2 stays pruned below 5-6 ft so it never morning-shades column 1.
Field-verified sun audit (photo series, 7/22/26): the NW bed columns are lit from ~7:30am through early evening = 10-11 summer hours; the SE fence line is shaded until ~9-10am then holds the last light at ≈ 8 hours β right for the Owari satsuma and the flower border; the whole yard is full sun midday. Where these observations disagree with the coarse computed estimates below, trust the field audit.
Date and time
Shadows are geometric estimates. Select a tree below, then tap the plan to place it. Plan up points toward the lake at true azimuth 35.94 degrees.
Seasonal direct sun
| Bed | Mar 21 | Jun 21 | Sep 21 | Dec 21 |
|---|
Five points per bed, sampled every 30 minutes while the sun is above the horizon.
Plant light needs
| Plant group | Target | Heat note |
|---|---|---|
| San Marzano tomatoes | 8+ hours, full sun | |
| Sweet peppers, jalapeno | 8+ hours | |
| Owari satsuma (SE fence) | 6 to 8 hours | Field-verified ~8 h on the SE line; shaded until ~9-10am then holds the last light. |
| Herbs | 4 to 6 hours | Basil wants more; parsley and cilantro less. Cilantro bolts in Texas summer. |
| Rabbiteye blueberries | At least 6 hours | Appreciate afternoon shade in Texas heat. |
| Strawberries | 6 to 8 hours | Grateful for afternoon relief. |
| Hibiscus, salvia, marigold | Full sun | |
| Comfrey | Part shade tolerant |