Hoya calycina - Papua Sweet Scent


Hoya calycina - Papua Sweet Scent

Vine or creeper plantSemi-shadeModerate waterYellow, orange flowersRed, crimson, vinous flowersOrnamental foliageWhite, off-white flowersPink flowersFragrant plant

This rare plant originates from Papua New Guinea and was first described in 1913. The flower is very fragrant and can infuse your entire house in a beautiful lilac scent. This vigorous grower makes a perfect houseplant with velvety leaves and fragrant white flowers sporting red centers. Each flower is almost 1" wide and they are borne in clusters that appear when the day length shortens in fall and winter. It can be grown in a pot with a trellis or in a hanging basket. The sweet scent of the flowers fills the air when Hoya calycina is in bloom.

Recommended Fertilizer: SUNSHINE Robusta - Rapid Growth Booster
Grown in
6"/1 gal pot
 

Plant form ?
Vine or creeper
Sun exposure
semi-shade
USDA zone ?
Zone 9-11.
Hardiness ?
Protect from freezing.
Watering
Moderate watering
Flower color
Pink flowers, White and off-white flowers, Red, crimson, vinous flowers, Yellow, orange flowers
Growing conditions
Outdoors in the suitable USDA zone, Small backyard, Pot-growing, Indoors
Foliage color
Ornamental foliage
Fragrance
Fragrant plant
More information

This item is certified for shipping to California, Texas, Louisiana, Arizona.

Hoya calycina - Papua Sweet Scent: Planting and Care Instructions

Plant Overview

Growth habit: This plant grows as a vine or creeper. It likes to climb or spread out, so it does well on trellises, fences, or along the ground. It can also be grown in a container with a support structure, making it suitable for patios or small spaces.

Growing conditions: This plant can be grown outdoors in the suitable USDA zone. It is well-suited for small backyards, pots, or indoor spaces with enough light.

Watering: This plant needs moderate watering. Allow the top of the soil to dry slightly before watering again.

Sun exposure: This plant prefers semi-shade. It grows well in places that get filtered sunlight or partial sun during the day.

USDA Zone: Zone 9-11. The USDA Plant Hardiness Zone Map categorizes North America into zones based on average annual minimum winter temperatures, each differing by 10 °F. This map serves as a basic guide for selecting appropriate plants for a region. However, it's not definitive; plant varieties vary in cold tolerance, and young plants typically need more protection. Additionally, local microclimates, like sheltered areas or sunny spots, can influence plant health and survivability beyond the general zone recommendation.

Hardiness: Protect from freezing. Plant hardiness indicates the coldest temperature a mature plant can endure briefly while staying healthy. This rating is a guideline and can vary among varieties of the same species. Young plants often need more cold protection. Additionally, a plant's survival can be enhanced by the microclimate of its location, which may provide shelter from wind or extra warmth, allowing it to thrive beyond its typical hardiness range.

Flower color: This plant produces pink, white and off-white, red, crimson, or vinous, and yellow or orange flowers during its blooming season.

Foliage: This plant is grown for its ornamental foliage, which adds texture or color to the landscape even when not in bloom.

Fragrance: This plant is known for its pleasant fragrance, adding a lovely scent to gardens or indoor spaces.

Outdoor planting

Select a planting spot that fits the plant sun and moisture needs. Loosen the soil and mix in compost or organic matter to improve poor soil. Dig a hole just slightly larger than the root ball and avoid planting deeper than it was before. For better drainage, the top of the root ball can sit slightly above the surrounding soil. Provide temporary shade at first if conditions are hot or sunny. Water regularly and monitor soil moisture until the plant is well rooted. nAdd mulch around the base to keep the soil moist and reduce weeds. Shape the mulch to form a shallow basin for water, but keep mulch away from the stem.

Indoor planting

Use a container with drainage holes and a well-draining potting mix. Position the plant so that the top of the root ball is level with the surface of the soil - avoid planting too deep. A slow-release fertilizer can be mixed into the soil at planting time to support healthy growth. Place the plant in a location that matches its light needs, and water according to its care requirements. Be careful not to overwater, and ensure good airflow around the plant to reduce the risk of pests and disease.

Protecting Plants in Winter

When it gets cold, some plants need extra help. You can move potted plants indoors or under a covered patio. Young plants need extra protection because they are more sensitive to cold and less established. For plants in the ground, use frost cloth to keep them warm. Stop using fertilizer in late fall so plants can rest. Try to place plants in areas protected from cold wind, rain, and frost.

Cold Hardiness and Microclimates

USDA zone and hardiness are only general guidelines. Actual cold tolerance can vary based on plant variety and local conditions. Even small differences between varieties can matter. Also, warmer spots in your yard—like near a wall or fence—can help plants survive cold nights. These little warm areas are called microclimates, and they make a big difference.

Outdoor and indoor planting instructions