Helianthus debilis
TAXONOMY
FamilyAsteraceae
GenusHelianthus
Zone8
LEARN MORE
Plants of the World OnlineABOUT
Helianthus debilis, commonly known as the beach sunflower or dune sunflower, is a member of the Asteraceae family. It is native to coastal areas of the southeastern United States. This plant is known for its bright yellow flowers and its ability to thrive in sandy soils and coastal conditions.
ALSO KNOWN AS
Cucumberleaf Sunflower
Helianthus debilis f. debilis
Helianthus debilis var. debilis
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature25° C
Humidity50%
GDD1,350
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Helianthus debilis prefers full sun and should be placed in a location where it can receive direct bright light for most of the day. It thrives in moderate temperatures and average humidity levels. Water the plant when the soil has dried out almost completely, but avoid waterlogging.Harvest
Helianthus debilis, commonly known as the beach sunflower, is typically harvested when the flowers are fully open and vibrant. This usually occurs in late summer to early fall. To harvest, cut the stems in the morning after the dew has dried but before the heat of the day. Use sharp, clean shears to make a clean cut just above a leaf node or bud to encourage further blooming. Ensure to handle the flowers gently to avoid bruising the delicate petals. The harvested flowers can be used for ornamental purposes or left to dry for seed collection.Soil
This plant prefers well-draining loamy soil. It can tolerate sandy soils, making it ideal for coastal gardens. Ensure the soil has good drainage to prevent root rot.Fertilizer
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize the plant during the growing season to promote healthy growth and flowering.Repotting
Repot Helianthus debilis when it outgrows its current container or if the soil has become compacted. Choose a slightly larger pot with good drainage and fresh loamy soil.Propagation
Propagate Helianthus debilis through seeds or cuttings. Sow seeds in the spring or take cuttings during the growing season. Ensure the cuttings have a few leaves and plant them in well-draining soil.Pruning
Prune the plant to remove dead or damaged leaves and spent flowers. This encourages new growth and helps maintain the plant's shape. Prune during the growing season as needed.Toxicity
Helianthus debilis is not toxic to pets or humans. It is safe to grow in gardens where pets and children are present.Additional
Helianthus debilis is a great choice for coastal gardens due to its tolerance for sandy soils and salt spray. It attracts pollinators such as bees and butterflies, making it beneficial for the local ecosystem.REVOLUTIONIZE YOUR PLANT CARE
Make Every Plant Smart
Plant Monitor
STAYS IN YOUR PLANT
Accurately measures the core metrics of your plant – soil moisture, light, temperature and humidity - as well as compound metrics such as Vapor Pressure Deficit (VPD) and Growing Degree Days (GDD).
Shop Now
