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Crocus spp.
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
JanFebMarAprMayJunJulAugSepOctNovDec
Sow / plantGrowingFlowering
Guides
- How to Plant Crocus Corms and Stop Squirrels Digging Them Up
- Crocus Care in Late Winter and Spring: Water, Feed and Birds
- Crocus After Flowering: When to Mow and Why to Leave the Leaves
- Crocus Growing Calendar: The Year From Planting to Dormancy
- Crocus Pests and Problems: Squirrels, Mice, Birds and Rot
- Crocus Summer Dormancy: Lifting, Dividing and Storing Corms
Common problems
Start from what you can see on the plant.
Pests and diseases (11)
Problems recorded for this plant, most serious first.
Sclerotinia Rot
Disease
The crown, stem or head rots in a water-soaked way and is covered in white cottony mycelium. Black sclerotia later form inside and on the surface, and the plant wilts and dies.
Bacterial Soft Rot
Disease
The crown or the head becomes water-soaked and soft, then collapses into a slimy mush. The rotting tissue gives off a distinctive foul odor.
Gray Mold
Disease
Water-soaked brown lesions form on flowers, fruit and leaves, densely covered by a fuzzy gray mold. Fruit rots and drops, and decay continues in storage after harvest.
Mosaic DiseaseDry RotPlant-parasitic NematodesCorm Hard RotCorm RotLeaf BlightBlue MoldNeck Rot
