Delphinium hansenii is a species of larkspur known by the common names Eldorado larkspur and Hansen's delphinium. It is endemic to California, where it grows in mountains, valleys, and desert from the southern Cascade Range to the Mojave Desert. This wildflower usually grows between one half and one meter in height, although it can grow much taller. The deeply lobed leaves are hairy, especially on the undersides. The inflorescence has usually over 25 flowers grouped close together at the top of the stem and held on long pedicels. The flowers are white to light blue or light pink, or bicolored, and vary in size. The inner petals may be quite hairy.
How to keep Delphinium Hansenii.
Water
To ensure healthy flower production, Hansen's larkspur requires consistently moist soil. During dry periods, water the soil thoroughly so that it remains damp at least 2.5 cm (1 inch) below the surface. Take care not to overwater, as this can cause root and crown rot.
Fertilizer
Hansen's larkspur is a nutrient-demanding plant that requires regular fertilization every 2 to 3 weeks. Use a balanced fertilizer, such as 10-10-10 or 16-16-16, starting once the roots have developed. Be careful to avoid fertilizers with high nitrogen content. During the growing season, apply chemical fertilizers twice: once in the spring and once in the fall.
Pruning
To help Hansen's larkspur thrive, begin by pruning it in early spring. This involves removing any damaged stems and improving air circulation. Pay special attention to weak branches, as this will lead to better flower production. After the plant blooms, trim the spent flower spikes. This encourages more blooms, promotes healthier growth, and reduces the risk of pests.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Delphinium
- Family
- Ranunculaceae
Other names.
Reader questions.
What are the sunlight requirements for Hansen's larkspur?
Hansen's larkspur needs careful consideration when it comes to sunlight. For those labeled as requiring 'full sun,' they thrive with exposure to sunlight for more than 6 hours a day. On the other hand, those requiring 'partial sun' are best suited to spots where they can enjoy about 3-6 hours of sunlight daily. It's crucial to observe how sunlight moves through your garden to find locations that offer an ideal mix of light and shade, which will ensure your plants are happy and healthy.
What is the botanical name of Hansen's larkspur?
The botanical name of Hansen's larkspur is Delphinium hansenii. This information is essential for those interested in the precise identification and classification of the plant.
