Delphinium dubium — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Delphinium dubium

Delphinium Dubium

Updated · 124 observations
ON THIS PLANT

Delphinium elatum is a species of flowering plant in the buttercup family Ranunculaceae, known by the common name alpine delphinium or candle larkspur. It is native to temperate Asia and Europe, it is an erect herbaceous perennial growing to 1.8 m (5.9 ft), with deeply divided leaves. It produces spikes of blue or purple flowers in summer.

A note from PlantMom

Delphinium dubium has strong resistance to disease and is typically not vulnerable to illnesses. Nevertheless, it can be affected by pests and diseases found nearby. Such infections are generally mild. Regarding care, this plant has moderate upkeep needs. It should be pruned regularly to preserve an attractive look and healthy growth. Applying fertilizer can also encourage more blooms. Delphinium dubium is appropriate for anyone with outdoor areas like a garden or patio and does not demand extensive plant-care experience. It may need extra attention if cultivated indoors.

— PlantMom
CARE GUIDE

How to keep Delphinium Dubium.

Light

Delphinium dubium is a sun-loving, herbaceous perennial native to open habitats and frequently found in meadows and grasslands. It prefers full sun but can also tolerate partial sun.

Temperature

Delphinium dubium can adapt to a broad range of temperatures, but its distribution may still be constrained by different combinations of moisture and heat. It performs best in warm summer climates with sufficient rainfall or watering. Extended periods of cloudy, rainy weather or prolonged high temperatures increase the chance of Delphinium dubium dying. In winter, providing proper protection from cold can improve the plant’s survival.

Fertilizer

Usually a single fertilizer application in spring is enough for Delphinium dubium, though several feedings can optimize growth. Apply once every month to month and a half. Fertilizing improves the leaves' appearance and function, helping maintain uniform color and a healthy texture. It also promotes root development and nutrient uptake for long-term plant health.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Perennial
Genus
Delphinium
Family
Ranunculaceae
Hardiness Zone
3-7
Mature Height
0.61 m to 1.52 m
Mature Spread
30 cm to 61 cm
Leaf Color
Dark Green
Leaf Type
Deciduous
Flower Size
2.03 cm to 4.06 cm
Bloom Time
Early summer, Mid summer
Planting Time
Spring, Summer, Autumn
Harvest Time
Late summer, Early fall
Native Area
Italy, France
PLATES
Delphinium dubium leaf
PLATE 01 · leaf
Delphinium dubium leaf
PLATE 02 · leaf
Delphinium dubium flower
PLATE 03 · flower
Delphinium dubium flower
PLATE 04 · flower
Delphinium dubium habit
PLATE 05 · habit
Delphinium dubium habit
PLATE 06 · habit
ALSO IN THE LIBRARY

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