Complete month-by-month rose care calendar: winter pruning, spring fertilizing, summer pest control, and autumn second-bloom management.
要点总结
Complete month-by-month rose care calendar: winter pruning, spring fertilizing, summer pest control, and autumn second-bloom management.
Once planted in your garden, roses can flourish for decades. But consistent, planned management throughout the year is essential for health and beautiful blooms. Neglecting seasonal tasks leads to pest damage, weakened growth, and poor flowering.
This calendar is based on Kanto region climate. Timing may shift 1-2 weeks depending on your location.
Main tasks: Winter pruning, dormant fertilizing, stock sterilization
Major pruning guidelines (late January–early February): - Once-blooming varieties: No pruning needed (prune in autumn) - Repeat-blooming varieties: Cut back 1/3 to 1/2 of total growth - Remove dead branches, diseased wood, and thin branches (thinner than a pencil) - After pruning, spray with fungicide (lime sulfur, etc.) to prevent fungal and viral diseases
Dormant fertilizer: Apply mixed organic matter 30cm from the base—bone meal, canola meal, and compost. Over winter, nutrients slowly dissolve into soil, boosting spring growth.
New growth begins. Clean up remaining dead and thin wood. When buds swell, apply organic or slow-release synthetic fertilizer.
Buds forming. Apply liquid fertilizer every 2 weeks. Aphids thrive now—catch early, remove by hand, or spray insecticide as needed.
Roses at their best. Stop fertilizing while flowers open. Once blooms fade, apply "thank-you fertilizer" (liquid) to encourage regrowth.
Deadheading: Remove spent flowers promptly to prevent disease from old petals.
Monsoon season: Black spot and powdery mildew peak. Spray preventative fungicide every 1-2 weeks.
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Summer pruning (late July): Repeat-bloomers need mid-summer cut—trim 1/4 to 1/3 overall to trigger autumn flowers.
Watering: Water deeply in early morning. Evening watering causes disease.
Harshest month. Reduce fertilizer, prioritize watering. Blooms drop in quality; cutting buds at this stage is fine.
45-60 days after summer pruning, autumn roses emerge—nearly as beautiful as spring. Apply organic fertilizer and enjoy.
Once blooming ends, remove spent flowers and dead leaves. Clear fallen debris—it harbors disease pathogens through winter.
In cold regions, mulch the base with aged leaves or bark chips for frost protection. Service pruning tools (shears, saws) for next year's major pruning.