Hoya Kerrii Care

Hoya Kerri care

Whether you’ve seen it as a single leaf or a full vine, the Hoya kerrii is a lovely plant. Hundreds of Hoya varieties exist, but the kerrii stands out thanks to its thick, heart-shaped leaves. Also known as Hoya heart, sweetheart vine, or lucky heart plant, the kerrii hails from tropical rainforests in Cambodia, Java, Laos, Thailand, Vietnam, and Malaya. Hoya care is easy, but these plants thrive when they are mostly left alone. Here is everything you need to know about Hoya kerrii care.

Plant Details

The Hoya kerrii is a vining plant that grows as an epiphyte, climbing trees to angle for a better position. The stems become thick and woody with age, and with plenty of time and excellent Hoya kerrii care, the vines can reach 13 feet long. The thick, fleshy leaves are heart-shaped. The foliage is solid green or variegated. Care is consistent for all Hoya kerrii cultivars. Some of the different Hoya kerrii cultivars include:

  • Hoya kerrii ‘variegata’
  • Hoya kerrii ‘splash’
  • Hoya kerrii ‘reverse variegata’

Will a Single-Leaf Hoya Kerrii Sweetheart Grow into a Plant?

Lots of plant shops sell rooted single-leaf Hoya kerrii cuttings, especially leading up to Valentine’s Day. The single-leaf Hoya Sweetheart is adorable and requires the same care as a full plant.

Many people buy these darling little rooted leaf cuttings in hopes of it one day turning into a lush, vining plant. If you’ve purchased or gifted a single-leaf Hoya kerrii Sweetheart and wondered if it will turn into a plant, it depends, but probably not. A single leaf in a pot is cute, and it will grow roots and survive, but it will not grow more leaves and become a plant. The leaf can turn into a whole plant if it has part of the stem that contains at least one node but ideally has a couple of nodes. 

Hoya sweetheart

Many single-leaf Hoyas do not feature nodes and will never become a plant. In the best care scenario, the cutting does have nodes and becomes a full plant, but it will take time, possibly years. 

If you want an adorable, minimalist leaf to feature on your desk or gift to a plant-loving Valentine, then the single-leaf Hoya Sweetheart is perfect. Go into the situation knowing that while it is possible, it is doubtful to become a full plant.

Hoya Kerrii Light Needs

Give the Hoya Kerri bright, indirect sunlight. This tropical plant likes lots of light but keep it out of direct sunlight because it can experience sunburn. Rotate the container every few weeks to ensure each side receives light and to prevent lopsided growth.

How Often to Water Hoya Kerrii

Hoya plants store water in their thick leaves so they can wait between watering sessions. Let the soil completely dry out before watering the Hoya kerrii. Plan to water every 10 to 14 days during the summer and once monthly during the winter. Sunlight and humidity impact how quickly the soil dries out, so these estimates are just guidelines. Always check the soil to gauge the dampness before watering.

Best Soil

Hoyas need airy, well-drained soil. A ready-made general potting mix is often too heavy for hoyas, so amend the soil with perlite or sand.

Hoya heart Care

Temperature for Hoya Kerrii

Temperatures between 60° and 80° F are best for Hoya kerrii care. The kerrii is a tropical plant that likes warm temperatures, so keep it away from vents or drafts.

Hoya Kerrii Humidity Needs

Hoya kerrii plants can live in average humidity, but increased dampness, at 60% or more, is better. Place the plant in a naturally humid area, like a kitchen or bathroom, or use a pebble tray with water or a humidifier if the air is too dry.

Hoya Sweetheart Fertilizer

Routine feedings help the Hoya kerrii grow as quickly as possible, which is still slow but faster than without fertilizer. Use a balanced fertilizer applied every four weeks during the spring and summer. Use a water-soluble fertilizer to protect the roots from fertilizer burn.

Hoya blooms

Does Hoya Kerrii Bloom?

Hoya kerrii plants bloom during the summer, producing clusters of tiny star-shaped flowers. The flowers often have a sweet fragrance. Only mature plants bloom, and the care must be on point if you want your plant to flower. The flowers certainly add to the plant’s appeal, but the Hoya kerrii is still lovely without blooms.

Hoya Sweetheart Pruning Tips

Trim the kerrii to remove dead or damaged growth or to take cuttings for propagation, but pruning is not generally necessary. Do not prune the dangling stems the flowers grow from, known as a peduncle, because the Hoya will bloom from the same stem multiple times. Also, new growth appears as bare vines and leaves emerge shortly after. The bare stem is normal, natural, and a sign that you have a healthy and thriving plant, so let it be, and leaves will fill in with time.

When to Repot Hoya Kerrii 

Hoya plants like to be slightly rootbound, so plan to repot every few years. Be particularly careful when repotting to avoid handling the roots as much as possible. All roots are sensitive, but Hoya roots are extra sensitive. Select a new container that is one to two inches larger and has drainage.

Hoya leaves

Hoya Kerrii Propagation

Propagate the Hoya kerrii via stem cuttings. Stem cuttings should be at least several inches long and have several nodes and leaves. Remove the lower leaves, exposing the nodes, and place the stem cutting in water, sphagnum moss, or soil so the nodes are covered. Roots will grow in several weeks, and the young plants can be transplanted into a light, well-drained potting mix when the roots measure a couple of inches long.

Is Hoya Sweetheart Pet Safe?

The Hoya kerrii is pet-safe. Hoyas are not toxic to pets, so your cat or dog will be safe if they chew or consume any part of the plant. 

Hoya Kerrii Styling Tips

Single-leaf Hoya kerrii plants are easy to style. Place the leaf in a decorative container on a desk, end table, or mantle. A full Hoya kerrii will look stunning in a hanger near a sunny window so the reaching vines can hang down. Give the plant a trellis or moss pole, and the vines will climb, creating an upright display.

Hoya Kerrii Care Tips

The Hoya kerrii is lovely and very hands-off, making it an excellent plant for novice plant owners or anyone interested in adding Hoyas to their collection. Lots of sunlight and humidity, warm temperatures, and being patient when it comes to water are essential to proper Hoya kerrii care.