Havamsu

GARDEN / A VISUAL GUIDE

Mapping Balcony Sunlight for Container Crops

Practical growing ideas for the space you have.

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Look Beyond Compass Directions

Compass orientation alone does not guarantee full sun. Upper floor overhangs, solid parapets, and side divider screens cast shifting shadows that divide your deck into narrow micro-strips of direct beam light and shade.

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Conduct a Two-Hour Photo Audit

On a clear late spring day, photograph your balcony from your doorway every two hours from 8:00 a.m. to 6:00 p.m. Three consecutive illuminated checks show roughly six hours of direct sun, qualifying as full sun.

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Position Fruiting Crops in Full Sun

Tomatoes, peppers, and cucumbers require at least six hours of direct, unfiltered sunlight to avoid leggy stems and dropped blossoms. Reserve your outermost railing zones and brightest perimeters for these high-energy edibles.

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Assign Greens and Herbs to Partial Shade

Root crops like radishes and herbs like parsley or mint thrive with four to five hours of sun. Leafy greens need only three to four hours; afternoon shade protects them from premature bolting and bitterness.

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Elevate Pots Above Railing Shadows

Low pots hidden behind solid railings often sit in prolonged shade. Use stable 12- to 18-inch stands or secure railing brackets to lift foliage above shadows into the continuous open sunlight overhead.

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Protect Root Zones From Balcony Heat

Hard concrete and brick radiate intense heat into container root systems. Place light-colored pots on feet for cooling airflow, and group containers so upper foliage shades lower rims from extreme drying.

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Full guide & sources