Japanese aralia

In the hot summer months it needs to be watered more frequently but only when the soil is dry. Do not over-water as this can cause root rot or leaf drop. During wintertime, decrease the amount of water and keep the soil just moist to the touch.

Japanese aralia loves bright light but should be protected from direct afternoon sun exposure. In colder climates, it's best to grow it indoors in a bright spot. If grown outdoors in regions with mild winters, it should still have some protection from the cold. In areas with cold winters, it’s best to grow it in a container that you can move indoors during cold months.

Fatsia japonica prefers temperatures between 50-75°F (10-24°C). It can tolerate a wider range from 20-90°F (-6.7-32°C). During the winter months, temperatures below 40°F (4.5°C) should be avoided. This plant should be grown indoors if temperatures go too far below this.

Japanese aralia likes to grow in high humidity conditions. It appreciates regular misting. If humidity levels drop too low, the leaves may develop brown tips. To increase humidity levels keep the room temperature below 70°F (21°C) and use a humidifier if possible.

Japanese aralia prefer soils that are loamy and free-draining, such as a mixture of peat and coarse grit. The soil should have a pH between 5 and 7.5 and should be well aerated.

In order to keep the best health, fertilize the Japanese aralia during the growing season using a balanced liquid fertilizer. Use the directions on the package for best results. Over-fertilizing can cause fertilizer burn, so be sure not to use too much. Apply the fertilizer every two weeks or so during the growing season.

Japanese aralias are particularly susceptible to mealybugs and spider mites, both of which can attack the leaves. To get rid of mealybugs, one must take a cotton swab dipped in isopropyl alcohol and rub the affected area. Spider mites, however, require a slightly different approach. A strong water pressure can remove them, or one could use an insecticidal soap or neem oil spray. Pyrethrum is also effective, yet it is important to be careful as it can burn the foliage.

Japanese aralia grows fairly slowly so it doesn't require frequent repotting. However, it is best to repot every two or three years to provide the plant with fresh nutrients. It is also important to select a pot that is only slightly larger than the current one to prevent root rot.

Japanese aralias require minimal pruning except for the removal of dead or damaged leaves. Flower clusters should also be trimmed to prevent seed pods from forming. Pruning can be done in the spring or fall, although it should be avoided during the middle of the growing season.

Mulching around the base of the plant can help keep the roots cool and moist and can also help suppress weeds. Use organic materials such as bark, pine needles, or compost for best results.

Japanese aralia can be propagated through seeds, stem cuttings, or air layering. To propagate through seed, the seed must be thoroughly cleaned to remove any debris. To propagate through stem cuttings, a sharp knife should be used to cut a stem section approximately 8 inches long and placed in a soil mixture. Air layering is done by making an incision in the stem and then wrapping the wounded area with sphagnum moss which should be kept moist. The moss should then be covered with plastic wrap to prevent dehydration. Once roots form, the section can be cut off and planted in a pot with soil.

Japanese aralia may need support as it matures and may also need pruning in order to keep it from getting too big. Stakes placed in the soil at the base of the plant can help to provide it with some support.

In their natural habitat, Japanese aralia experience a winter rest period. For those who grow their plants indoors, this rest period is not necessary since the temperature during winter is often higher. If the temperature does drop below 40°F (4.5°C), the aralia should be brought indoors.

Japanese aralia is considered to be toxic to cats and dogs. If ingested, it can cause vomiting, diarrhea, depression, and anorexia.