Euonymus japonicus green spire is a plant that is native to Japan. It is an evergreen shrub that can grow up to 6 feet tall. The leaves are glossy and dark green in color. The flowers are small and white in color. The fruit is a small, reddish-purple berry.
Related plant:
Euonymus Japonicus Aureus
Related plant:
Euonymus Europaeus Red Cascade
About soil condition, euonymus japonicus green spire prefers well-drained soils, and can tolerate a wide range of soils including clay. It is intolerant of wet soils. It can grow in full sun or partial shade.
So, like the other Euonymus Japonicus, Green Spire requires full sun to partial shade. It is a heat tolerant plant and can even grow in full sun. But if you live in an area with hot summers, it is best to grow this plant in partial shade.
The temperature condition that is most favorable for the growth of euonymus japonicus green spire is between 15 to 20 degrees Celsius. This plant grows best in shady areas and in soil that is moist but well-drained.
Ideal humidity condition for this plant is around 50%. If the humidity is too low, the leaves will start to turn brown and drop off. If the humidity is too high, the leaves will start to yellow and drop off.
About fertilizer, this kind of plant need high concentration of nitrogen, phosphorus and potassium to thrive. The best fertilizer for euonymus japonicus green spire is Osmocote 14-14-14. For best results, apply the fertilizer in early spring before new growth begins. Be sure to follow the package directions for application rates. As for the roots, euonymus japonicus green spire has a shallow root system, so it is important to mulch around the base of the plant to help retain moisture. Be sure not to put the mulch too close to the stem, as this can cause the plant to rot.
Pruning euonymus japonicus green spire is best done in late winter or early spring. This plant responds well to hard pruning, so don't be afraid to cut it back. It's a good idea to prune off any dead or damaged branches. This plant can also be pruned to create a hedge.
Propagation is most successful with softwood or semi-ripe cuttings taken in late spring or early summer. The cuttings should be taken from young, vigorous shoots that are just beginning to harden off and should be about 4-6 inches (10-15 cm) long. Cut just below a leaf node and remove the bottom leaves. Dip the cuttings into a hormone rooting powder and plant in moistened, well-drained seed compost or perlite. Place the pot in a warm, bright spot out of direct sunlight and keep the compost moist but not waterlogged. Rooting usually takes place within 4-8 weeks. Once rooted, pot on individual plants into 3-4 inch (8-10 cm) pots filled with a good quality potting compost and grow on until large enough to plant out in their permanent positions.
Usually, the plant growth rate is about 1 to 2 feet per year, with a rapid growth rate in the first year that then tapers off. However, newer cultivars have been developed that boast a growth rate of 3 to 4 feet per year. If you're looking for a plant that will quickly fill in an empty space in your garden, green spire euonymus is a good choice.
Common problems for this kind of plant are over watering, unbalanced fertilizer, and disease. These problems can lead to the leaves of the plant turning yellow and falling off, the stems becoming weak, and the plant not being able to flower or fruit properly. To prevent these problems, it is important to water the plant only when the soil is dry, to fertilize it evenly, and to keep an eye out for signs of disease.
Source:
Euonymus japonicus 'Green spire' - Missouri University of
JC Raulston Arboretum - Our Plants - Euonymus japonicus 'Green Spire'
Euonymus japonicus 'Green spire' - University of Missouri