Yellow gromwell (Neatostema apulum)

Yellow gromwell

Also known as: Blackweed

Herbaceous, very leafy, branched at the base or not, with many hairs, very short, about 15 cm tall. Yellow flowers in terminal inflorescence, forming a balloon of leaves or bracts that exceed the flowers, then lengthens in ripening. Corolla about 3 mm in diameter with 5 rounded lobes joined in a hairy tube.

Scientific classification

Species

Yellow gromwell (Neatostema apulum)

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Spring, Summer

Bloom Time

15 cm

Plant Height

4 mm to 5 mm

Flower Size

Yellow

Flower Color

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Yellow gromwell

Distribution of Yellow gromwell

Distribution Map

Yellow gromwell predominantly inhabits the Mediterranean region, thriving in its native warm and temperate zones. It has also been introduced to parts of Central Europe. Its growth extends naturally across a wide span of adjacent semi-arid areas, becoming less common as it reaches the temperate fringes of the continent.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Grassland, rocks

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Yellow gromwell

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Yellow gromwell thrives in Mediterranean climates, favoring less frequent watering and exhibiting moderate drought tolerance. It typically needs weekly hydration. Outdoors, yellow gromwell benefits from natural rainfall, which better suits its water cycle compared to indoor cultivation.

Fertilize: For optimal growth of yellow gromwell, use balanced fertilizers monthly during the growing season and shift to high-nitrogen options in the blooming phase. Apply quarter-strength liquid fertilizer, avoiding direct root contact. Reduce applications in winter, and always water yellow gromwell after fertilization to ensure nutrient distribution.

Pruning: Yellow gromwell thrives with pruning in early to late spring, which promotes new growth and flowering. Trim dead stems and use sterilized tools to prevent disease. Additionally, remove competing vegetation to improve air circulation and sunlight for optimal health.

Propagation: Yellow gromwell, from the Boraginaceae family, is primarily propagated by seed sowing in well-draining, fertile soil. Maintain consistent moisture without oversaturation and handle seedlings delicately during transplanting. Position young yellow gromwell plants in sunny locations to promote robust growth.

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Images of Yellow gromwell

Distribution of Yellow gromwell

Care Guide for Yellow gromwell

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