Seasonal Maintenance Guide
- Apply slow-release rose fertiliser by 15 February in plains, 1 March in hill stations, before active growth begins
- Stake delphiniums and hollyhocks in hill stations before March winds — use 1.2 m bamboo canes
- Sow marigold (Tagetes erecta) seeds direct in prepared beds in February for a May-June flowering display
- Mulch all beds to 8-10 cm depth by 31 March in plains to protect through April-June heat
- Prune Bougainvillea hard by end of February to trigger a flowering flush before summer
- Apply copper oxychloride fungicide preventively to roses and dense cottage beds before monsoon humidity builds
- Spray roses with systemic fungicide (propiconazole or mancozeb) every 7-10 days when humidity exceeds 80% RH — blackspot establishes within 4 days on unprotected foliage
- Deadhead marigolds and Pentas every 5-7 days — prolific bloomers need constant deadheading to maintain momentum
- Support tall cottage perennials against monsoon wind with additional bamboo canes by 15 June
- Remove waterlogged debris from cottage beds immediately after heavy rains — botrytis spreads overnight on wet plant material
- Transplant Zephyranthes bulb clumps that have exceeded 30 cm diameter — divide and replant at 15 cm spacing
- Sow seeds of winter annuals (cosmos, sweet alyssum, pansies) in trays under cover from August for October planting out
- Plant out winter annuals — cosmos, sweet alyssum, snapdragons, petunias — once night temperatures drop below 25°C (typically mid-October)
- Plant bare-root roses in October-November for best establishment before peak winter flowering season
- Refresh mulch after monsoon compaction — top up to 5-8 cm to protect through cool-dry season
- Prune Bougainvillea and Plumbago to tidy form after monsoon growth flush — this triggers pre-winter flowering
- Hill stations: cut back delphiniums after first flowering to encourage second autumn flush before frost
- Collect and store marigold seeds for next season — allow heads to fully dry on the plant before harvesting
- Peak rose season in plains — deadhead every 5 days for continuous flowering through December and January
- Plant spring-flowering bulbs: Zephyranthes, Crinum, and Gladiolus in October for January-March flowers
- Hill stations: protect roses and tender cottage perennials with frost fleece when night temperatures drop below 2°C
- Apply compost and vermicompost top dressing to all cottage beds — winter is the prime enrichment season
- Collect seeds from favourite cosmos, pansies, and hollyhocks for next season
- Plan layout changes for the following year — cottage gardens benefit from annual editing of what is and is not working












