Hoya Wilbur Graves Russia is a coveted, visually striking houseplant, known for its unique aesthetic and distinctive foliage. It is a desirable addition to any indoor plant collection.
Understanding Hoya Wilbur Graves Russia
Hoya Wilbur Graves Russia is a cultivar of Hoya carnosa, selected for its remarkable splashy characteristics and unique leaf shapes. Its leaves are typically shorter, rounder, and ovate, often displaying generous silver variegation, with some almost entirely covered in silver. The “Russia” designation refers to its origin, as this clone was reportedly first imported into the United States from Russia, distinguishing it from other Hoya Wilbur Graves clones.
While leaf characteristics can vary, the plant’s appeal lies in its stable and high silver splash, a genetic trait influenced by lighting conditions. Like other Hoya carnosa varieties, it has a trailing or twining growth habit.
Caring for Hoya Wilbur Graves Russia
Light
This Hoya thrives in bright, indirect light, requiring a high amount of light to maintain its bright, splashy leaves. Insufficient light limits growth and can cause leaves to lose variegation. South-facing windows are often ideal, but east or west-facing windows also provide suitable natural sunlight. If natural light is limited, strong fluorescent illumination for 12-16 hours daily can be used.
Watering
Hoya Wilbur Graves Russia prefers dry conditions and should be watered lightly, allowing the soil to dry out slightly between waterings. Overwatering can lead to root rot. During the active growing seasons of spring and summer, the plant requires more frequent watering, but this should be reduced in fall and winter when the plant enters dormancy.
Soil
A well-draining and airy potting mix is crucial for this Hoya to prevent waterlogging and root issues. Ingredients like coco coir, orchid bark, perlite, and horticultural charcoal provide the necessary aeration and drainage.
Temperature and Humidity
Hoya Wilbur Graves Russia prefers average household temperatures, with a minimum of around 60°F (15°C), and is not tolerant of cold. It benefits from moderate to high humidity, ideally around 50% or more. While it can tolerate drier environments, light humidity care like misting or grouping plants can be beneficial, and a humidifier may help during cooler, drier months.
Fertilizing
Fertilizing is necessary during the spring and summer growing seasons. A balanced water-soluble fertilizer, diluted to half strength and applied once a month, is generally sufficient. Fertilizing should be withheld during the fall and winter months when the plant is dormant.
Potting and Repotting
When repotting Hoya Wilbur Graves Russia, do so when the plant has outgrown its current container, typically when roots are visible at the drainage holes or growth has slowed significantly. Terracotta pots can be beneficial due to their porosity, which aids in drainage. Choosing a pot size that is only slightly larger than the current one helps prevent the soil from remaining wet for too long, which can lead to root rot.
Propagating Hoya Wilbur Graves Russia
Stem cuttings should be taken from tender stems with at least two leaves, typically 4 to 6 inches long. Using clean, sharp shears ensures a clean cut. These cuttings can be rooted in water or directly in a well-draining soil mix.
For water propagation, place the cutting in a vessel with water, ensuring at least one node is submerged, and change the water periodically. For soil propagation, plant the cutting directly into a suitable potting mix. Dipping the cut end in rooting hormone can encourage faster root development. Maintaining high humidity around the cuttings, perhaps in a propagation box or by covering them with a plastic bag, can also aid in successful rooting. Cuttings typically root within a few weeks.
Troubleshooting Common Hoya Issues
Yellowing leaves often indicate overwatering, which can lead to root rot, or occasionally a nutrient deficiency. A lack of silver splash on new leaves usually points to insufficient light, as strong light enhances variegation. Pests like mealybugs and spider mites can infest Hoyas and be treated with insecticidal soap or neem oil. Leaf drop may result from drastic environmental changes, inconsistent watering, or prolonged stress. If the plant fails to bloom, it might be due to insufficient light, immaturity, or a lack of phosphorus in the fertilizer.
Rarity and Sourcing Hoya Wilbur Graves Russia
Hoya Wilbur Graves Russia has historically been a sought-after and relatively rare plant, contributing to its higher price point. In 2020, it was considered a “unicorn Hoya,” highlighting its desirability. Its rarity stems from its specific lineage and collector demand.
While its price has decreased, it can still be more expensive than other Hoyas. Enthusiasts can find it through specialized online nurseries, reputable online plant sellers, or plant swaps. When sourcing, identify legitimate sellers and look for plants with clear signs of authenticity, such as the characteristic shorter, rounder, ovate leaves with significant silver splash, as mislabeling can occur. Prioritizing sellers who provide clear photos and lineage information can help ensure a healthy and true-to-type plant.