Castroviejoa frigida

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Taxonomy

Context

nativeRegion

Endemic to coastal regions of northwestern Iberian Peninsula (Spain and Portugal).

usdaZones

Zones 8-10.

companionPlants

Armeria maritima, Silene uniflora, Plantago maritima

culturalUses

Primarily of botanical and conservation interest; no significant culinary or medicinal uses are documented.

Care

LightPrefers full sun exposure but can tolerate partial shade.

WateringRequires moderate watering; do not allow soil to remain soggy.

SoilWell-drained, sandy or rocky soils are ideal, mimicking native coastal conditions.

FertilizerGenerally does not require supplemental feeding; a light, balanced fertilizer during the growing season may be used if growth appears slow.

HumidityTolerates average humidity; does not require high humidity.

TemperatureHardy to cool temperate climates; protects from severe frost.

HabitPerennial herb or subshrub forming basal rosettes and upright stems.

Mature SizeTypically reaches 30-60 cm in height.

Growth RateModerate growth rate.

BloomingProduces small, daisy-like flower heads, usually in late spring or early summer.

DormancyMay exhibit winter dormancy, especially in colder regions.

MethodsSeed, Division

DifficultyModerate; seed germination may require cold stratification.

Best SeasonAutumn or early spring.

PruningRemove spent flower stalks to encourage new growth.

RepottingRepot young plants as needed, preferably in spring.

Pests & DiseasesGenerally pest-free; watch for occasional aphids or mildew in overly humid conditions.

ToxicityNot known to be toxic to humans or animals.

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