Rosularia chrysantha (Prometheum chrysanthum)

Rosularia chrysantha, also known as Prometheum chrysanthum, is a flowering perennial belonging to the Crassulaceae family and native to southeastern Europe and the Caucasus region, as well as parts of southwestern Asia. This plant grows to about 12 inches tall and has dark-green, oval leaves that are covered in fine hairs and have serrated edges.

It produces small, delicate yellow flowers with purple centers from late spring to early summer that look best when planted in the shade with dry soil and partial sunlight.

Prometheum chrysanthum is a hardy perennial shrub with an orange hue and an unusual rosette shape. It flowers from spring through to autumn, attracting bees and butterflies to its bright red tubular flowers.

Rosularia chrysantha, is an ornamental flowering perennial that comes in colors of red, pink, orange, and yellow and blooms from August to October with flowers that resemble the sun.

Origin and distribution

Rosularia chrysantha originates from New Zealand and Tasmania. It is also found in Australia. It has been introduced to most areas of North America as well as some parts of Europe and Asia. There are many different cultivars of Rosularia chrysantha, but only a few make it into cultivation outside of their native range due to a lack of flowering color or cold hardiness.

Rosularia chrysantha is often used as an ornamental plant. The cultivar ‘Tricolor’ was awarded an All-American Selection award in 2000 by the American Horticultural Society for its outstanding garden performance.

In addition to its use as an ornamental plant, Rosularia chrysantha is sometimes used in herbal medicine. Some common names include: Prometheum Chrysanthum, Promethean Lily, Red Flowered Lily, and Golden Naked Lady.

It can be confused with other species such as Lilium parvum which looks very similar to Prometheum Chrysanthum except that Lilium parvum flowers are smaller than those of Promethean Lily.

Rosularia chrysantha propagation

Rosularia chrysantha

Rosularia can be easily propagated by dividing clumps in spring or early summer. Dig up clumps with a fork, divide them into smaller pieces and replant. You can also take stem cuttings if you want to make more plants from one.

Simply remove a six-inch section of stem with leaves on it, dip in rooting hormone and plant it in moist soil. It will root quickly if placed where it will get some sun. If kept indoors, place it under bright lights. Water sparingly until new growth appears.

Othonna Euphorbioides: Tips For Care And Propagation

After that, keep it lightly moist but not soggy. Be careful not to overwater as rosularia is prone to root rot.

Once rooted, move potted plants outdoors during warm weather and bring them back inside when temperatures fall below 50 degrees F.

Rosularia chrysantha care information

Rosularia chrysantha

Rosularia chrysantha care is very easy. Give it plenty of light and a good, well-draining potting mix with no more than 50% sand and perlite. Water it when it’s dry to avoid rot; over-watering is one of its biggest hazards in captivity.

It’s also not cold hardy, so treat it as an annual or give it a very warm spot in your greenhouse if you live in a colder climate and want to keep it alive all winter long.

Rosularia Chrysantha is a gorgeous succulent that boasts beautiful blooms in just about every color. Unfortunately, they don’t like direct sunlight and can be very sensitive to their environment.

As such, many people have trouble growing them and end up having to throw away their beautiful flowers as a result.

Light requirement

Rosularia chrysantha, or prometheum chrysanthum, is a perennial that can thrive with full sun to partial shade. However, rosularia flowers will tend to be more vibrant and colorful in areas that receive more sunlight. It is important to know where you live and choose a location accordingly.

The plant likes lots of light, but not direct sunlight. Too much direct sunlight can burn leaves, which makes them turn brown and crispy. If leaves begin to turn brown from too much sun exposure, move the plant further away from the window/out of direct sunlight.

Rosularia can be placed outside in the summer months with protection from direct sunlight; just remember to bring it back inside before frost hits! It does well indoors year-round without any problems except for extremely cold temperatures.

Soil/potting mix

In pots, rosularia requires soil or potting mix consisting of one-third sand, one-third vermiculite, and one-third peat moss. The mix should have a pH level between 6.0 and 7.0. In planting beds, plant rosularia in well-drained soil that’s neutral to slightly acidic (pH 6.5). An equal blend of peat moss and sandy loam usually works best for containerized plants or garden plots.

Sempervivum 'Mark Weller' - 6 Amazing Steps To Propagate The Plant


Thrives in a humid environment and needs water as it doesn’t like to dry out, but keep in mind that too much water will kill it. Water when the soil feels dry 1′′ deep. A good way to check is to stick your finger down into the soil near the base of the plant, if it feels damp all the way through, don’t water! Feel soil once a week or so until you find your schedule works for you.


It is necessary to fertilize once a week, using a fertilizer specifically designed for cacti and succulents. In summer they can be fertilized twice a month. If over-fertilization occurs it will result in excessive production of flowers, which could harm both health and aesthetic. It’s also important to bear in mind that these plants do not like having their root system disturbed – for example when moving them or transplanting them into pots of larger sizes.

Avoid using manure-based fertilizers, as they can make your plant sickly. If you opt for fertilizer, choose a water-soluble variety high in nitrogen (N), such as 10-10-10 or 20-20-20. Apply it every two weeks during the spring and summer months; use half as much fertilizer during the fall and winter months. Be sure to keep your flower bed moist throughout all seasons, but don’t overwater! Rosularia chrysantha prefers light soil that drains quickly after watering.


You will need to adjust your temperature depending on your season. If you live in an area that is warm or tropical, it is best to keep your plant between 15 and 20 degrees Celsius with 16 being optimal. On other hand, if you are in a cold area then keep your Rosularia at 11 degrees Celsius with 12 being optimal.


The humidity levels for Rosularia chrysantha should be around 70% or higher. The best way to ensure that your plants receive adequate humidity is by placing them on a tray filled with small pebbles and water. Place it in an area of your home where there is plenty of fresh air movement, like a kitchen window, in order to prevent mold from growing. Do not spray directly on plant leaves.

Senecio Mandraliscae 'Blue Chalk Sticks'


As with most houseplants, it’s a good idea to prune rosularia periodically to keep its shape and health. This will also stimulate new growth. To prune your rosularia, cut away dead or damaged leaves and stems from the center of your plant, making sure not to damage any healthy ones.

Trim back any stems that are growing at an angle, as well as those that have grown too long. If you want to grow more than one rosularia in a single pot, take some time to separate them so they don’t become tangled up; once they are separated, you can trim back each stem separately.

When to repot

Rosularia chrysantha

Rosularia chrysantha grows slowly and does not need to be repotted frequently. Repot your rosary plant only when it becomes crowded in its current pot or has outgrown its container.

While repotting, inspect the rosary plant roots to ensure they are healthy and that there is enough root room in their new home. If your rosary plant’s roots are growing along the edge of its container or have become matted, it may be time for a change.

Dormancy/Winter rest

Rosularia chrysantha, also known as prometheum chrysanthum is a perennial flowering plant that will die back after flowering in Autumn. Before reaching dormancy, it is recommended to water Rosulraria Chrysanatha frequently to keep its root system alive during hibernation.

However, watering it too much may cause fungal infections which can kill your plant. It is best to use rainwater or distilled water for watering purposes. If you have an excess of rainwater, try using it for your plants during wintertime instead of distilled water or tap water.

The soil should be kept moist but not wet throughout dormancy. If possible, add some mulch on top of the soil before winter comes so that soil doesn’t dry out completely and becomes infertile for next year’s growth cycle.

Rosularia chrysantha flower & fragrance

Rosularia orchids have waxy, colorful flowers, often with a strong fragrance. The Promethean orchid has striking pink-and-white blooms, which will bloom for about two months.

While it is an indoor plant that prefers cool temperatures and indirect sunlight, it also grows well in outdoor gardens. Promethean orchids prefer high humidity levels but can grow at higher altitudes without any trouble as long as they’re not exposed to extreme temperatures.

Orbea variegata (Starfish Succulent Plant)

Growth rate

Rosary plants have a relatively slow growth rate, but their compact size and robust structure make them ideal for both small indoor and outdoor areas.

This hardy perennial will only reach two feet in height, but it offers a wide array of beautiful hues that ranges from bright green to deep burgundy throughout each season. Furthermore, rosary plants also enjoy a relatively short blooming season compared to other flowering types of flora.


Rosularia chrysantha, also known as prometheum chrysanthum, is non-toxic to humans and animals. However, it can cause discomfort in pets that are allergic to Lamiaceae (Labiatae) family members; for example, those with short hair and allergies to mint. In these instances, symptoms might include salivation, vomiting, or diarrhea.

USDA hardiness zones

Rosularia chrysantha thrives in USDA hardiness zones 8 through 11. While it can be grown indoors, it will not thrive without sufficient sunlight.

Pests and diseases

Rosularia chrysantha can grow for several years before showing any signs of ill health. However, if you discover that your plants are suffering from leaf spots or powdery mildew, treat them with neem oil spray. To ensure healthy growth, keep an eye out for aphids and spider mites.

If you notice these tiny pests on your plants, mix together two teaspoons of soap with 1/2 teaspoon of horticultural oil and 2 cups of water.

Spray your plants with a mixture of one-part soap to nine parts water once a week. This treatment will kill off all plant-destroying bugs without harming beneficial insects like ladybugs.


Keeping Rosularia chrysantha indoors will require you to place it in direct sunlight. If that’s not an option, make sure you place your plant near a window with a lot of sunlight streaming through. Also, avoid keeping plants in shaded rooms because they won’t get enough exposure to light.