Patio Planter Failure: Overwatering in Shallow Full-Sun Planter

Your San Diego patio planter (6" deep, full sun) has marigolds with crispy, crumbling petals despite watering every other day + fertilizer. You're overwatering.

Why Every-Other-Day Kills in Shallow Planters

• 6" depth = small soil volume = fast drying BUT also fast waterlogging
• Constant moisture = no soil oxygen = root rot = crispy tops (can't uptake water)
• Roots need to "breathe" CO2 from soil air spaces

Fix: Water Meter ($5-10)

• Insert, leave in soil
• Water ONLY when meter reads "dry zone"
• Removes all guesswork

Plant Suggestions

• Keep marigolds (sun-lovers)
• Add geraniums (also full sun, complementary colors)
• Both thrive in lean, well-drained conditions

Planter Reality

Shallow + full sun = demanding water management. The meter pays for itself in saved plants immediately.

Your beautiful planter will flourish once the roots get air.