Hoya merrillii ‘Long Leaf’ is a popular houseplant known for its distinctive foliage. It offers unique visual appeal.
Distinguishing Hoya Merrillii ‘Long Leaf’
Hoya merrillii ‘Long Leaf’ is distinguished by its elongated, lance-shaped leaves. Its glossy, dark green leaves feature prominent venation, intensifying in brighter light. Bright light may also develop red or bronze hues. Originating from the humid, tropical forests of Mindoro Island in the Philippines, its climbing and trailing habit creates a graceful appearance.
Optimal Care for Hoya Merrillii ‘Long Leaf’
Light Requirements
Hoya merrillii ‘Long Leaf’ requires bright, indirect light for optimal growth. Place the plant near an east or west-facing window, or a sheer-curtained south-facing window. Excessive direct sunlight scorches leaves, fading color. Insufficient light results in dull foliage and reduced growth.
Watering Practices
Crucial for Hoya merrillii ‘Long Leaf’ health is proper watering. Allow the soil to dry out almost completely between waterings. A finger test determines when to water. Overwatering causes yellowing, mushy stems, and root rot; underwatering shrivels or dries leaves.
Soil and Potting
Hoya merrillii ‘Long Leaf’ needs a well-draining, airy potting mix. A suitable mix includes orchid bark, perlite, and coco coir for aeration and drainage. The pot must have drainage holes. Repot when root-bound, typically every two to three years, into a slightly larger pot.
Temperature and Humidity
Hoya merrillii ‘Long Leaf’ thrives in warm, humid conditions. Maintain temperatures between 65-85°F (18-29°C), avoiding temperatures below 50°F (10°C). Humidity around 50-70% promotes healthy growth. Methods include a humidifier, pebble tray, or grouping plants. While tolerating average household humidity, increased moisture is beneficial.
Fertilization
Hoya merrillii ‘Long Leaf’ requires regular fertilization during spring and summer. Apply a balanced, diluted liquid fertilizer once a month. Slightly higher phosphorus may encourage blooming. During cooler winter months, reduce or cease fertilization due to slower growth. Over-fertilizing causes root damage and leaf burn.
Propagation Methods
Stem cuttings are used to propagate Hoya merrillii ‘Long Leaf’. Select a healthy stem with at least one node. Remove lower leaves to expose the node, aiding rooting. After cutting, allow the end to callus for a few hours to prevent rot.
Cuttings can be rooted in various mediums:
Water
Perlite
Sphagnum moss
A well-draining soil mix
Perlite is favored for aeration and easy soil transition. Maintain consistent moisture, warmth, and humidity for root formation. Rooting hormone promotes faster root growth but is not always necessary.
Addressing Common Problems
Lack of Blooms
Hoya merrillii ‘Long Leaf’ may not flower. Plant maturity is a factor; Hoyas need to reach a certain age to bloom. Consistent care (bright, indirect light, proper fertilization) supports flowering. A slightly root-bound condition and avoiding over-potting encourage blooms.
Yellowing Leaves
Yellowing leaves often indicate watering issues. Overwatering is a common cause, causing soft, mushy leaves. Conversely, underwatering also causes yellowing, though these leaves feel dry and shrivel. Other contributors include nutrient deficiencies (showing from lower leaves) or natural aging of older foliage.
Leaf Drop
Leaf drop indicates environmental stress. Abrupt changes in temperature, cold drafts, or inconsistent watering trigger leaf drop. Both prolonged dryness and excessive moisture stress the plant, causing shedding. Environmental stability and proper watering mitigate leaf drop.
Slow or Stunted Growth
Slow or stunted growth in Hoya merrillii ‘Long Leaf’ has several causes. Insufficient light is a cause; light is essential for photosynthesis. A lack of nutrients in the soil also hinders growth, requiring regular fertilization. Additionally, root-bound plants may require repotting into a slightly larger container.
Pests
Hoya merrillii ‘Long Leaf’ is susceptible to common sap-sucking houseplant pests. Mealybugs, spider mites, and scale insects are common. Mealybugs appear as small, fuzzy white spots; spider mites create fine webbing and stippling. Scale insects are small, oval, armored pests attaching to stems and leaves. Prompt treatment, like rubbing alcohol, insecticidal soap, or neem oil, manages infestations.