Coreopsis maritima, the sea dahlia, is a species of tickseed in the sunflower family.Coreopsis maritima is native to Southern California and Baja California, primarily in coastal California chaparral and woodlands habitats. It grows on mainland ocean bluffs in San Diego County and in northern Baja California, with a few isolated populations reported from just west of Malibu in Los Angeles County, Santa Cruz Island in Santa Barbara County, and Stoddard Canyon north of Rancho Cucamonga in extreme southwestern San Bernardino County.
Sea dahlia is fairly disease-resistant and typically not prone to illnesses. However, it can be affected by pests or diseases present in its surroundings. Such infections are usually mild. In terms of care, this plant needs moderate maintenance. Regular pruning is necessary to keep a nice appearance and support healthy growth. Fertilizing can also help encourage flowering. Sea dahlia is suitable for anyone with an outdoor space, like a garden or patio, and does not demand extensive care experience. It may need more attention if grown indoors.
How to keep Coreopsis Maritima.
Light
Sea dahlia is a sun-loving perennial herbaceous plant that comes from open habitats and commonly grows in meadows and grasslands. It prefers full sun but can also tolerate partial sun conditions.
Water
The sea dahlia thrives in slightly moist soil without any standing water until it reaches maturity; after that, it becomes drought-tolerant. During its growth, water the plant weekly, ensuring the soil is kept moist to a depth of 1 inch (2.5 cm). Watering in the morning helps prevent sunburn and limits bacterial growth. To avoid soil compaction and to promote healthy growth, use rainwater or distilled water.
Temperature
Sea dahlia can tolerate a wide range of temperatures, but its distribution may still be restricted by particular combinations of moisture and heat. It performs best in warm summer climates with sufficient rainfall or regular watering. Extended periods of cloudy, rainy weather or sustained high temperatures can raise the chances of Sea dahlia dying. In winter, adequate protection from cold improves the plant's survival rate.
Fertilizer
For Sea dahlia, the primary time to apply fertilizer is in early spring when the flowers begin to form. The proper fertilizer promotes better blooms and helps Sea dahlia produce attractive flowers. Fertilizing in early spring ensures excellent flowers throughout the season and supplies energy for dormant growth phases.
Pruning
The sea dahlia flourishes in coastal environments and is known for its bright yellow flowers. To encourage growth and maintain a healthy plant, it's important to prune dead stems and spent blooms early in the spring. This practice not only enhances the plant's shape and airflow but also prevents it from becoming leggy. Regular pruning improves the plant's overall vigor and beauty, ensuring a strong and attractive appearance throughout the growing season.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Coreopsis
- Family
- Asteraceae
- Hardiness Zone
- 8-10
- Mature Height
- 30 cm to 91 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green
- Leaf Type
- Deciduous
- Flower Color
- Yellow
- Flower Size
- 5.08 cm to 6.35 cm
- Bloom Time
- Summer, Early fall, Mid fall
- Planting Time
- Spring, Summer
- Harvest Time
- Late summer, Fall, Early winter
- Native Area
- Mexico
Other names.
Reader questions.
What are the sunlight requirements for growing Sea dahlia (Coreopsis maritima)?
The Sea dahlia, also known as Coreopsis maritima, thrives under specific sunlight conditions to ensure its growth and happiness. For plants that require full sun, they need above 6 hours of sunlight daily. On the other hand, those that prefer partial sun should receive about 3-6 hours of sunlight. It's important to observe the movement of sunlight through your garden throughout the day. Identifying areas that offer the perfect balance of light and shade will help in placing your Sea dahlia in a spot that meets its sunlight requirements efficiently.
What is the botanical name of Sea dahlia?
The botanical name of Sea dahlia is Coreopsis maritima.
