Scaevola crassifolia aka Thick Leaved Fan Flower

Scaevola crassifolia is considered an easy-care plant once established. It tolerates drought, salt spray, sandy soils, and full coastal exposure with minimal intervention.

Scaevola crassifolia reaches approximately 1 metre in height when grown in protected garden positions. However, in exposed coastal locations, the plant naturally adopts a lower, more spreading habit as an adaptation to wind and salt exposure. The growth form is variable, ranging from an upright shrub to a dense groundcover depending on growing conditions.

Scaevola crassifolia is native to the coastal regions of Western Australia. Its natural distribution spans several bioregions including Carnarvon, Dampierland, Esperance Plains, and the Swan Coastal Plain. The species typically grows in sandy soils near the coast where it plays an important role in natural dune stabilisation.

Scaevola crassifolia produces distinctive blue to blue-white fan-shaped flowers that are characteristic of the Scaevola genus. The flowers appear to have had one side removed, creating an unusual half-fan or hand-like shape. Blooming occurs from mid-winter through to summer, providing colour during cooler months. In cooler regions, flowering may be delayed.

Scaevola crassifolia can be propagated from seed or stem cuttings. For seed propagation, sow in spring or early autumn when temperatures are moderate, avoiding extreme heat or cold. Seeds require temperatures of 18-22°C and typically germinate in 21-60 days. Smoke treatment can help reduce germination time. Stem cuttings taken in late summer can also be rooted successfully.

Scaevola crassifolia is exclusively an outdoor plant, not suitable for indoor cultivation. It thrives in full sun positions in USDA hardiness zones 9-11, making it ideal for Mediterranean, subtropical, and warm temperate climates. The species is particularly well-suited to coastal gardens where it tolerates salt spray, sandy soils, and exposed conditions.

Scaevola crassifolia is notably resistant to pests and diseases. NC State Extension reports that the Scaevola genus has 'no serious insect or disease problems.' This resilience, combined with the plant's tough, fleshy leaves and adaptation to harsh coastal conditions, makes it a trouble-free choice for gardens. Good drainage remains important to prevent root issues in overly wet soils.

Scaevola crassifolia is a warm-climate plant native to coastal Western Australia. It thrives in temperatures typical of Mediterranean to subtropical climates and is hardy in USDA zones 9-11. The species is frost-tender and should be protected from prolonged cold or freezing conditions. It tolerates heat well and handles the exposed conditions of coastal environments.

Scaevola crassifolia is pollinated by insects. The distinctive fan-shaped flowers of the Scaevola genus have evolved to attract and guide insect pollinators effectively. The flowers produce nectar and the unusual half-fan shape helps direct visiting insects to the reproductive parts of the flower. Native bees and other pollinators are important for seed production.

Scaevola crassifolia is highly adaptable to humidity levels and does not require specific humidity conditions. As a coastal native, it naturally tolerates the variable humidity of seaside environments, from salt-laden marine air to drier inland breezes. The thick, fleshy leaves help the plant cope with both humid coastal conditions and drier periods.

Scaevola crassifolia has low fertilizer requirements, reflecting its adaptation to nutrient-poor coastal sands. Excessive fertilization, particularly with phosphorus, can be harmful to many Australian native plants. A light application of slow-release native plant fertilizer in spring is sufficient. In native garden settings, minimal to no supplementary feeding is typically required.

Scaevola crassifolia benefits from light pruning after flowering to maintain a compact, bushy shape and encourage new growth. Without pruning, the plant may become leggy over time. Tip pruning young plants helps promote branching. In exposed coastal positions where the plant naturally grows low and spreading, pruning requirements are minimal.

Thick Leaved Fan Flower should be watered regularly, allowing the soil to dry out between waterings.

Thick Leaved Fan Flower loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Thick Leaved Fan Flower requires abundant, bright and direct light. Placing it less than one foot from a window is the best way to make sure the plant receives enough light to survive and thrive. Depending on your region, however, the current weather can affect the placement of the plant in your home. For example, in some areas the sun may be too direct and intense, so it's best to place it farther away from the window. You may also need to adjust your placement according to the season as the sunlight can change intensity over the course of the year. If you live in a region with significant temperature fluctuations, such as a desert, you may need to place the plant a bit farther away from the window to avoid extreme heat or cold. With some care and attention, your Thick Leaved Fan Flower will be sure to bring you many years of beauty and enjoyment.

Ploi does not possess verified information regarding the toxicity of this particular plant. In the event that you, a member of your family, or a pet ingests plant material with an unclear toxicity level, it is highly recommended to seek the advice of a medical professional.