Switchgrass rust
What you will see
Orange-brown pustules on the leaves.
How to protect
- Prevention
- More resistant cultivars (ornamental ones have fewer pustules).
- Airy planting.
- By hand once noticedRemove and destroy affected leaves.
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Grass · Poaceae family
Panicum virgatum
Where to plant and how much to water
It grows best in full sun to part shade, in soil from dry to moist.
How much space it takes
The mature plant next to a person (69 in).
Plant 22¾ in apart.
Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
Typical for a temperate climate (four seasons). The line shows the current month.
container plant: April–May
What to plant now (April) full list in April (323) →What to plant now (May) full list in May (185) →
Feeding
Pests and diseases
The most common problems in Central Europe. Protection is listed from the gentlest option.
Orange-brown pustules on the leaves.
Orange-brown pustules on the leaves.
What to combine it with
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
It tolerates part shade (3–6 hours of sun), but not full shade.
At maturity 1 ft 11⅝ in–2 ft 11⅜ in wide and 2 ft 11⅜ in–6 ft 10⅝ in tall; recommended spacing 22¾ in.
More resistant cultivars (ornamental ones have fewer pustules). Remove and destroy affected leaves.
Similar plants
Calamagrostis ×acutiflora
Pennisetum alopecuroides
Miscanthus sinensis
Uses