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Gladiolus spp.
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- How to Plant Gladiolus Corms Deep Enough to Stand Up
- Gladiolus Care: Watering, Feeding and Cutting the Spikes
- How to Stake Gladiolus So the Spikes Do Not Fall Over
- Gladiolus Growing Calendar: Planting to Lifting, Stage by Stage
- Gladiolus Thrips: Silvered Leaves, Ruined Flowers and Infested Corms
- Lifting and Storing Gladiolus Corms Over Winter
Common problems
Start from what you can see on the plant.
Pests and diseases (20)
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.
Rust
Disease
Small raised orange-yellow to red-brown pustules form on both leaf surfaces, then rupture and release powdery spores. Heavy infection yellows the leaves and kills them early.
Southern Blight
Disease
The stem rots at soil level and white silky mycelium spreads over the crown and the surrounding soil surface. Brown sclerotia the size of rapeseed then form and the plant wilts and dies rapidly.
Root-knot Nematode
Pest
The plant wilts in the daytime and does not recover with feeding or watering. Pull it up and the roots carry beaded chains of galls of varying size with few fine roots.
Leaf Spot
Disease
Small round brown to gray-white lesions appear on the lower leaves, the centers turning gray with tiny black specks. As they multiply the leaf yellows and drops early.
