This is an annual or perennial herb producing a hairy, erect stem which often has a woody base. Small, pointed leaves are arranged alternately about the tall stem. The raceme inflorescence occupies the top of the stem with many pink or red snapdragon flowers between one and two centimeters long each.
I. Appearance and Characteristics
Sairocarpus multiflorus (syn. Antirrhinum multiflorum) is a species of New World snapdragon known by the common name Sierra snapdragon or multi-flowered snapdragon.
It is endemic to California, where it is known from the central Coast Ranges, the Transverse Ranges, and one section of the Sierra Nevada foothills. It grows on lower-elevation mountain slopes and springs up in disturbed and recently burned areas. This is an annual or perennial herb producing a hairy, erect stem which often has a woody base. It does not cling or climb like some other snapdragon species. Small, pointed leaves are arranged alternately about the tall stem. The raceme inflorescence occupies the top of the stem with many pink or red snapdragon flowers between one and two centimeters long each.
II. How to Grow and Care
Sierra snapdragon is a resilient bloomer that thrives in various conditions, making it relatively easy to care for. Key care points include ensuring well-draining soil and providing moderate water, allowing the soil to dry out slightly between waterings. Special care should be given to protecting sierra snapdragon from extreme cold, as it prefers sunnier, milder environments.
Sunlight
Sierra snapdragon prefers full sun or partial shade. In the heat of the summer under the intense sun, it may stop blooming, but if partially shaded and well-watered, it can persist until fall and bloom again. If planting in a container, make sure to place sierra snapdragon near a window or on a balcony that preferably receives sufficient sunlight. At least 3 hours of sunlight is needed.
Temperature
Sierra snapdragon is native to Europe, parts of North America, and North Africa. It flowers in the spring or fall as it enjoys cooler weather. Sierra snapdragon prefers temperatures around 4 ℃ at night and around 20 ℃ during the day. It requires an adequate amount of water, keeping the soil moist while it grows. Once established, it will need some water every week if there is no rain.
Watering
Thriving in its native rocky slopes, sierra snapdragon is accustomed to moderate moisture levels. This species has adapted to be somewhat drought-tolerant, yet it appreciates consistent hydration for optimal growth. Watering should occur twice a week to maintain the balance it prefers. As an outdoor plant often found in higher elevations, sierra snapdragon benefits from well-draining soil that mimics its natural habitat, which contributes significantly to its water management during the growing season.
Soil
Sierra snapdragon needs well-drained, neutral soils with pH ranging from 6.5-7.0. It does not require a great number of nutrients, but grows well in fertile soils; mixing organic matter can keep it healthy and flowering.
Fertilizing
For optimal growth, sierra snapdragon thrives with balanced nutrition fertilizers during the active growing season, applying a 10-10-10 NPK formula once monthly. High-nitrogen fertilizers can be used in early spring to foster vigorous foliage. Aim for lighter, more frequent feedings for young sierra snapdragon, reducing frequency as the plant matures. Over-fertilization can harm, so adhere to recommended rates. Seasonal adjustments in fertilization promote robust growth and abundant blooms, ensuring sierra snapdragon remains vibrant. Periodic soil testing benefits accurate nutrient management.
Planting Instructions
Sierra snapdragon is often bought as seedlings or grown from seeds. New plants planted outside should be spaced 15 to 30 cm from each other to prevent diseases from spreading and allow airflow. In containers, they should be planted 10 cm from each other. Sierra snapdragon grows well in borders.
Pruning
Cutting off the top of the stems keeps sierra snapdragon flowering longer. There are varieties of different heights, from dwarf (15 to 20 cm) to tall (76 to 122 cm). Taller varieties may need stakes to support them. If they survive the winter, cut them back about one third to encourage new growth. Thinning regularly can improve ventilation.
Propagation
Sierra snapdragon is a captivating wildflower known for its resilience and vibrant blossoms. Propagating sierra snapdragon can be successfully achieved through sowing, where careful consideration of soil mix and moisture levels is essential. It is imperative to use a well-draining medium and maintain consistent hydration without waterlogging. Light plays a crucial role in germination, thus, seeds should be sown on the soil surface or covered with a minimal amount of soil to allow for sufficient exposure to light.
