Nemesia cheiranthus
Nemesia cheiranthus
Long-eared Nemesia
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Taxonomy
Family Scrophulariaceae · Genus Nemesia
Common Names
Long-eared NemesiaYellow Nemesia
Context
nativeRegion
Native to South Africa, particularly the western Cape.
usdaZones
Hardy in USDA Zones 9–11; usually grown as an annual elsewhere.
companionPlants
Lobelia, Alyssum, Viola, Diascia
culturalUses
Popular in ornamental horticulture for bedding, containers, and borders; prized for its unusual snapdragon-like flowers with long spurs.
Care
Care Requirements
LightPrefers full sun to partial shade for best flowering.
WateringKeep soil consistently moist but not waterlogged; avoid letting it dry completely.
SoilWell-draining, moderately rich loamy or sandy soil with neutral to slightly acidic pH.
FertilizerLight feeding with a balanced liquid fertilizer every 4-6 weeks during active growth.
HumidityPrefers average humidity; avoid prolonged periods of soggy or excessively dry air.
TemperatureBest grown in cool climates; thrives at 10-20°C (50–68°F); heat may reduce flowering.
Growth & Life Cycle
HabitAnnual or short-lived perennial herb with erect stems and delicate flowers.
Mature Size15–30 cm (6–12 in) tall; spread 15–25 cm (6–10 in).
Growth RateFast-growing; reaches maturity within one season.
BloomingProduces bicolored, yellow and white flowers from late spring to early autumn.
DormancyNo true dormancy; dies back after flowering in most climates.
Propagation
Methodsseeds, softwood cuttings
DifficultyEasy from seed; moderate from cuttings.
Best SeasonSow seeds in early spring indoors or directly after last frost.
Maintenance & Notes
PruningPinch back young plants to encourage bushier growth; deadhead spent blossoms to extend bloom.
RepottingNot typically required; grows as an annual bedding plant.
Pests & DiseasesGenerally trouble-free but may occasionally suffer from aphids or powdery mildew.
ToxicityNot known to be toxic to humans or pets.
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