Hydrangea preziosa is a plant that is native to Japan. It is a deciduous shrub that can grow to be about 3 meters tall. The leaves of the plant are ovate and the flowers are white.
Related plant:
Hydrangea Paniculata Diamant Rouge
Related plant:
Bloom Struck Hydrangea
About soil condition, Hydrangea preziosa prefers slightly acidic to neutral soils (pH 6.0 to 7.5). It also needs well-drained soils rich in organic matter. The plant does not tolerate waterlogged soils. For best results, incorporate some organic matter such as compost or well-rotted manure into the planting bed before planting.
So, like the other hydrangea species, the Preziosa prefers sun-dappled conditions and moist, well-drained soil. It can tolerate partial shade, but may not produce as many flowers. Morning sun and afternoon shade is often ideal. It's a good idea to provide some shelter from strong winds, which can damage the large flower clusters.
The temperature condition for the Hydrangea preziosa is that it should be in a range of 60 to 75 degrees Fahrenheit. They prefer moist soils that are well-drained and rich in organic matter. They also like a lot of sun, but can tolerate some shade.
Ideal humidity condition for this plant is 40-50%. However, the plant can tolerate a range of humidity levels, as long as it is not too extreme. If the air is too dry, the leaves will start to brown and if the air is too wet, the leaves will start to yellow.
Regarding fertilizer, this plant does best with a low nitrogen fertilizer. An ideal fertilizer mix would be something like 6-10-10 or 8-8-8. This plant is also quite tolerant of poor soil, so you don't need to be too concerned about perfect nutrients. As long as the soil is well-draining, the plant should be just fine. As for watering, the plant prefers evenly moist soil, but it is quite tolerant of occasional dry spells. It is important to not let the soil get too soggy, as this can lead to problems with the roots. An easy way to check the soil moisture is to stick your finger into the soil up to the first knuckle. If the soil is dry at that point, it is time to water.
Pruning is an important part of hydrangea care. Pruning helps to encourage new growth and to keep the plant looking its best. The best time to prune your hydrangea is in late winter or early spring, before new growth begins. When pruning, be sure to remove any dead or damaged branches.
Propagation is by softwood or semi-ripe cuttings taken in summer, or by seed in spring. The base of the cutting should be just below a leaf node, and the cutting should have at least two sets of leaves. The cutting should be placed in a propagator or equivalent with bottom heat at a temperature of 21-24°C (70-75°F) until rooting has taken place, which should be in 4-6 weeks.
Usually, the plant growth rate is between 1 to 2 inches per week. This rate can be increased with proper care and nutrients. To ensure optimal growth, it is important to water the plant regularly and apply a fertilizer that is high in nitrogen.
Common problems for this kind of plant are pests and disease. pests such as aphids, whiteflies, and caterpillars can cause damage to the leaves, while diseases such as powdery mildew and leaf spot can cause the leaves to discolor and fall off.
Source:
Hydrangea - North Carolina Extension Gardener Plant Toolbox
Hydrangea - University of Connecticut
Growing Hydrangeas - Center for Agriculture, Food, and the
