Camellia

Year-round

Camellia japonica is a broadleaf evergreen shrub grown for its glossy leaves and its late winter through spring flowers. It is an Asian ornamental with no wild range in North America, so no nativity claim applies here. In the Philadelphia area it sits near the cold edge of where it reliably survives, so siting matters more than it would farther south.

• Give it part shade with shelter from harsh winter wind and strong afternoon sun. Exposed leaves can scorch in cold, windy weather.
• Plant in acidic, well drained soil with plenty of organic matter worked in. Camellias struggle in soggy or alkaline ground.
• A spot near a house wall or fence that blocks winter wind gives it a warmer microclimate, which helps a lot in a zone 7 area like Philadelphia.
• Camellia is not on the ASPCA list of toxic plants for dogs, cats, or horses.

Fall

Fall is a quiet season for camellia. The plant is holding onto the flower buds it set over the summer, getting ready to open them in late winter or early spring.

• Skip pruning now. Any cuts at this point would remove the buds that are about to bloom.
• Water through dry fall stretches so the plant goes into winter well hydrated.
• Refresh mulch around the base before the ground freezes to protect the roots through winter.

Winter

Winter is the biggest test for camellia in the Philadelphia area, since the region sits near the cold edge of where this plant reliably survives outdoors.

• A sheltered spot out of direct winter wind and harsh afternoon sun helps prevent leaf scorch and bud loss.
• Sudden hard freezes, especially readings near 0 degrees Fahrenheit, can damage or kill flower buds even on an established plant.
• Flower buds may start opening in late winter. A late cold snap can brown the blooms that are already out. That is normal winter weather damage, not a sign the plant is failing.
• Mulching the root zone before winter helps buffer the shallow roots from freeze and thaw cycles.

Spring

Spring is when camellia finishes its main flowering and pushes new growth, which makes it the best window for pruning and feeding.

• Prune right after flowering ends to shape the shrub. This timing matters because next year's flower buds form over the summer, so pruning later removes next year's blooms.
• Feed with an acid loving plant fertilizer once flowering wraps up and new growth starts.
• Check for any winter damage on leaves and stems and trim out parts that did not make it through the cold.

A tidy post bloom prune keeps the shrub's shape neat for a front yard, and doing it right after flowering avoids cutting off next year's buds.

Summer

Summer heat means camellia needs steady moisture and protection from the harshest afternoon sun, while next year's flower buds are quietly forming.

• Water deeply about once a week during hot, dry stretches. Shallow, frequent watering does not reach the roots as well as a slower deep soak.
• Keep a few inches of mulch around the base to protect the shallow root system and hold in moisture.
• Avoid heavy pruning now. This is when next year's flower buds are setting, and cutting them off means fewer blooms next spring.
• Watch leaves for scorch, meaning brown crispy edges, if the plant is getting more direct afternoon sun than it can handle.