Hoya lacunosa ‘Splash’ is a captivating houseplant known for its unique foliage and fragrant blooms. Its compact, trailing form features small, deep green leaves with striking silver speckles, creating a “splashed” appearance. Its manageable size makes it ideal for indoor environments, including hanging baskets or climbing displays. Native to Southeast Asia, this epiphyte offers visual appeal and a sweet aroma.
Hoya Lacunosa Splash Care Guide
Light Requirements
Hoya lacunosa ‘Splash’ thrives in bright, indirect light, essential for enhancing its distinctive “splash” variegation. Place it near an east or west-facing window to provide ample light without harsh direct sun. Excess direct sun can scorch leaves, while too little light diminishes speckling and limits flower production. If natural light is limited, supplemental grow lights can provide necessary illumination for healthy growth.
Watering Needs
Proper watering is important for the health of Hoya lacunosa ‘Splash’, which prefers its soil to dry out between waterings to prevent root rot. Water thoroughly when the top 1-2 inches (2-3 cm) of soil feel dry to the touch. During cooler months, reduce watering frequency as the plant’s growth naturally slows. Overwatering is common; it is generally better to underwater this plant than to leave its roots in soggy conditions.
Humidity and Temperature
This tropical plant flourishes in moderate to high humidity levels, ideally around 60% or more, which can promote faster growth and more abundant blooms. While it can adapt to average indoor humidity (40-50%), methods such as using a humidifier or grouping plants can help increase moisture in the air. The optimal temperature range for Hoya lacunosa ‘Splash’ is between 18-29°C (65-85°F). It is important to shield the plant from cold drafts and temperatures below 10°C (50°F) to prevent stress.
Soil and Potting
A well-draining, airy potting mix is essential for Hoya lacunosa ‘Splash’, mimicking its natural epiphytic habitat. A suitable blend includes orchid bark, perlite, and coco coir for good drainage and aeration. This mix allows roots to breathe and prevents waterlogging. Repot every 2-3 years, or when root-bound. Hoyas prefer to be slightly snug, which can encourage blooming.
Fertilization
During the active growing season (spring through early fall), Hoya lacunosa ‘Splash’ benefits from regular fertilization. Apply a balanced liquid houseplant fertilizer, diluted to half strength, every 4-6 weeks. Alternatively, use a fertilizer with higher phosphorus to encourage blooming. Skip fertilization during winter when growth slows.
Encouraging Blooms and Fragrance
Hoya lacunosa ‘Splash’ produces charming, star-shaped white flowers with a sweet, cinnamon-like fragrance, especially in the evening. To encourage blooms, provide consistent bright, indirect light. Allowing the plant to become slightly root-bound also stimulates flowering.
Higher humidity and warm temperatures further support bloom production. Avoid removing flower spurs (small nubs remaining after flowers fade), as new blooms emerge from these spots. Consistent care and appropriate fertilization during the growing season contribute to a prolific flowering display.
Propagating Hoya Lacunosa Splash
Propagating Hoya lacunosa ‘Splash’ is straightforward, most commonly achieved through stem cuttings. Select a healthy, mature stem with at least one or two nodes (points where leaves emerge). A 4-6 inch cutting is suitable; remove lower leaves to expose nodes.
Cuttings can be rooted in water, moist sphagnum moss, or a well-draining soil mix. If rooting in water, change it every few days to prevent bacterial growth. For soil or moss, keep the medium consistently moist but not soggy. Roots usually develop within weeks to a couple of months, then new plants can be potted.
Common Problems and Troubleshooting
Yellowing leaves often indicate overwatering or underwatering. Soft, mushy leaves suggest overwatering, while dry, crispy leaves point to underwatering. Adjust the watering schedule to allow soil to dry adequately between sessions.
Lack of “splash” variegation can be due to insufficient light; move the plant to a brighter, indirect location. Stunted growth might signal nutrient deficiency, addressed with a balanced fertilizer, or the plant may be root-bound and require repotting. Common pests like mealybugs or spider mites are identified by sticky residue or fine webbing and can be treated with insecticidal soap or neem oil.