How to Grow Hydrangea Arborescens Annabelle - Plant Care & Tips

By NorwichGardener Team / 2024

Hydrangea arborescens annabelle is a plant that is native to north america. it is a deciduous shrub that can grow to be about 3-5 feet tall. the leaves are green and the flowers are white.

How to Grow Hydrangea Arborescens Annabelle - Plant Care & Tips

Also known as

Snowball hydrangea
Annabelle hydrangea
Seven-bark
White hydrangea
Smooth hydrangea

Common Knowledge

Hydrangea arborescens 'Annabelle' is a widely planted hydrangea cultivar.
It is a deciduous shrub with large, showy white flowers.
'Annabelle' typically blooms from late spring to early summer.
The flowers are followed by small, green fruits.
The leaves are dark green and turn purplish-red in the fall.
'Annabelle' grows best in full sun to partial shade.
It prefers rich, moist soils, but will tolerate a wide range of soil conditions.
'Annabelle' is generally disease and pest resistant.
It can be propagated by softwood cuttings.
'Annabelle' is a popular plant for gardens and landscaping.

Related plant:
Hydrangea Paniculata Diamant Rouge

Planting Process

For hydrangea arborescens annabelle, first step is preparing the soil. This plant prefers a soil that is high in organic matter and well-drained. If your soil is heavy, you may want to consider adding some sand to improve drainage.
The second step is to choose a planting site. This plant prefers full sun to partial shade.
The third step is to dig a hole that is twice the width and depth of the root ball.
The fourth step is to remove the plant from the container it is in and gently loosen the roots.
The fifth step is to place the plant in the hole, making sure the crown (the area where the roots and stems meet) is slightly above ground level.
The sixth step is to fill in the hole with soil and water thoroughly.
The seventh step is to apply a layer of mulch around the plant, but not touching the crown. This will help keep the roots cool and moist.
The eighth step is to water regularly, especially during the first growing season.
The ninth step is to fertilize in early spring and mid-summer with a general purpose fertilizer.
The tenth and final step is to enjoy your beautiful plant!

Related plant:
Ruby Slippers Hydrangea

Considering the Soil

About soil condition, hydrangea arborescens annabelle grows best in moist, well-drained soil, but it tolerates a wide range of conditions. It prefers a slightly acidic soil (pH 6.0 to 6.5), but it will also do well in neutral or even slightly alkaline soil (pH 7.0 to 7.5). If the soil is too alkaline, the flowers may be more pink than white.

Light requirement

Just like other hydrangeas, the hydrangea arborescens 'Annabelle' needs at least six hours of sun each day to bloom well. The best blooming occurs in full sun, but some afternoon shade is beneficial in hot summer areas.

The Temperature

The temperature condition that is most ideal for hydrangea arborescens annabelle is around 70 degrees Fahrenheit. This temperature allows the plant to thrive and produce the most beautiful blooms. If the temperature gets too hot or too cold, the plant will not do as well.

Humidity Aspect

Ideal humidity condition for this plant is around 60%. If the humidity is too low, the leaves will dry out and the plant will wilt. If the humidity is too high, the leaves will turn yellow and the plant will develop fungal diseases.

The Fertilizer

Discussing fertilizer, this plant does best with a balanced fertilizer. Apply fertilizer when the plant is actively growing, typically in spring and summer. Avoid getting fertilizer on the leaves, as this can cause burning. To encourage strong root growth, consider using a root stimulator.

Plant Pruning

Pruning is an important part of maintaining your hydrangea arborescens annabelle. Pruning not only helps to encourage new growth, but also keeps the plant looking tidy and neat. When pruning, be sure to remove any dead or dying stems, as well as any that are crossing or rubbing against each other. Doing this will help to keep your plant healthy and looking its best.

The Propagation

Propagation of Hydrangea arborescens 'Annabelle' is typically done through softwood cuttings taken in late spring. The cuttings should be 4-6 inches long and taken from new growth. It is important to make sure the cuttings have at least two sets of leaves. Dip the cuttings in rooting hormone and plant them in a well-draining potting mix. Keep the soil moist but not wet and place the pot in a shady location. Roots should form within 4-6 weeks. Once the roots are established, you can transplant the new plants to their permanent location.

Plant Growth

Usually, the plant growth rate is about 1-2 feet per year. However, under the right conditions, some plants have been known to grow 3 feet in a single year. The important thing to remember is to keep the plant well-watered and fertilized throughout the growing season.

The Problems

Common problems for this kind of plant are powdery mildew, leaf spot, and root rot. Powdery mildew is a white powdery fungus that appears on the leaves and stems of the plant. Leaf spot is a brown or black spot that appears on the leaves of the plant. Root rot is a brown or black rot that appears on the roots of the plant.

Tips on Growing

Do not forget to water your Annabelle hydrangea regularly, especially during the hotter months. Make sure the soil is moist but not soggy.
Fertilize your plant once a month using a balanced fertilizer such as 10-10-
Prune your plant annually in late winter or early spring, before new growth begins.
Place your Annabelle hydrangea in an area that receives at least six hours of sunlight per day.
Amend the soil with organic matter such as compost before planting.
Space your plants at least three feet apart to allow for proper air circulation.
Apply a layer of mulch around your plants to help retain moisture and discourage weeds.
Be on the lookout for pests such as aphids and spider mites. Treat infestations immediately.
To create additional interest, plant other sun-loving annuals or