Hoya Krinkle 8, a popular houseplant, is a cultivar of Hoya carnosa, commonly known as the wax plant. This variety features distinctive thick, waxy, deeply dimpled, or “krinkled” foliage. The “8” in its name refers to the eight depressions often found on its mature leaves. It originated in the 1960s from a cross between Hoya carnosa and Hoya carnosa ‘Compacta’ (Hindu Rope Plant). Its attractive foliage and fragrant, star-shaped blooms make it a favored choice among plant enthusiasts.
Hoya Krinkle 8 Care
Light
Hoya Krinkle 8 thrives in bright, indirect light. Placing it near a window where it receives filtered sunlight, such as an east or west-facing window, is ideal. While it can tolerate some direct morning or late afternoon sun, intense direct sunlight can scorch its waxy leaves, leading to discoloration or burn marks. Insufficient light hinders its growth and may prevent it from flowering.
Watering
Hoya Krinkle 8 is sensitive to both overwatering and prolonged dryness. The “soak and dry” method is recommended, allowing the soil to dry out almost completely between waterings. Overwatering is a common problem, leading to root rot, causing yellowing or browning leaves that feel soft or mushy. Conversely, underwatering can cause leaves to shrivel or droop.
Soil
Given its epiphytic nature, Hoya Krinkle 8 requires a well-draining, airy potting mix that mimics its natural habitat. A suitable mix often includes components like orchid bark, perlite, coco coir, or pumice for proper drainage and aeration. General-purpose potting mixes require amendment with these coarser materials to prevent the soil from becoming too dense and retaining excessive moisture, which can lead to root rot.
Temperature and Humidity
Hoya Krinkle 8 prefers average to warm indoor temperatures, thriving between 15°C to 29°C (60°F to 85°F). It is sensitive to cold drafts, and temperatures below 10°C (50°F) cause damage. While it adapts to average household humidity, higher humidity, ideally between 60-80%, is beneficial for optimal growth, achievable with pebble trays or humidifiers.
Fertilizing
During its active growing season (spring and summer), Hoya Krinkle 8 benefits from regular fertilization. A balanced, water-soluble fertilizer (e.g., 10-10-10 or 20-20-20 NPK) is suitable. Dilute the fertilizer to half or quarter strength and apply it monthly or every few waterings to prevent root burn. Fertilizing should be reduced or stopped during the cooler, darker winter months when growth slows.
Repotting Hoya Krinkle 8
Hoya Krinkle 8 prefers to be somewhat root-bound, so frequent repotting is not required. Repotting is typically needed every two to three years, or when the plant clearly outgrows its container. Indicators include roots circling within the pot, emerging from drainage holes, or slowed growth.
When repotting, select a pot one to two inches larger in diameter to prevent excessive moisture retention. Good drainage is essential; terracotta pots are beneficial due to their moisture-wicking properties. Ensure the new pot is filled with a well-draining, airy potting mix, similar to the general care recommendation.
Propagating Hoya Krinkle 8
Stem cuttings are the most effective method for propagating Hoya Krinkle 8. Select a healthy stem with at least one or two nodes and a few leaves. Remove the leaves from the bottom node to expose it, as roots emerge from this point.
Cuttings can be rooted in water or a suitable potting mix. For water rooting, place the cutting in clean water, ensuring the node is submerged. For soil rooting, plant the cutting directly into a well-draining mix, keeping it consistently moist but not waterlogged. Warmth and bright, indirect light encourage successful rooting.
Common Issues with Hoya Krinkle 8
Hoya Krinkle 8 can face common problems, often related to improper care. Pests like mealybugs, spider mites, and scale insects can cause damage like yellowing leaves or sticky residue. Inspecting the plant regularly and treating infestations promptly with insecticidal soap or neem oil help manage infestations.
Watering issues are common. Soft, mushy yellow leaves often indicate overwatering and root rot. Dry, crispy yellow leaves or shriveling suggest underwatering. Adjust watering based on soil dryness. Lack of flowering may stem from insufficient light or plant immaturity.