Endless Summer Hydrangea Care

Endless summer hydrangea plants have all the benefits of other hydrangeas and the ability to grow blooms on new growth. Unlike other hydrangeas, endless summer plants don't have to "winter over" to bloom, making them perfect for northern climate zones.

Endless Summer Hydrangea For Your Yard

Variety: Endless Summer Hydrangea Hydrangea Macrophylla
Zones: 4 to 9
Soil Type: Organically rich, well-drained soil
Soil pH: 5.0 to 8.0
Sunlight: sun to part shade, depending on zone
Availability: Sold as nursery grown starter plants. When buying plants, look for plants in bloom if possible. A blooming plant allows for no confusion about its type or quality. If this isn't possible, make sure plants have vigorous growth and aren't damaged or diseased.
When to plant: Nursery grown endless summer hydrangea can be planted any time of the year after the danger of frost has passed. Your plants will get the best start if planted in early summer or early fall. If your endless summer hydrangea plants are placed in mid summer, they must be monitored carefully and not allowed to dry out.
Planting Method: Position your endless summer hydrangea in a well drained area where it has plenty of room to grow. While these plants prefer some shade during the day, they have more tolerance for sun in cooler climate zones.
To plant, dig a hole three times wider than the container your endless summer hydrangea came in, but no smaller than 3' in diameter. The planting hole should be as deep as you plant's container. Remove your plant from its container and place it in the hole. Replace the dirt so that the soil reaches the same level as that of the plant.
Watering: Endless summer hydrangeas require a consistent moisture level of 1" per week. Supplement rainwater to maintain this level and be particularly diligent during periods of drought. Plants in full sun should be closely monitored to insure they don't dry out.
Fertilizing: Feed your endless summer hydrangeas with a balanced, slow-release fertilizer in mid spring and mid summer. Avoid feeding after August, as your hydrangeas will be entering their dormant period as fall progresses. Changing the pH level of your plant's soil in the early spring, before blooms form, will modify hydrangea bloom color. For blue flowers, mix one tablespoon of aluminum sulfate in a gallon of water and apply to the soil twice in the early spring. For pink flowers, sprinkle palletized lime over the soil and water in during the early spring.
Diseases
Powdery Mildew: Usually found on plants that do not have enough air circulation or adequate light. Plants should be watered at ground level to avoid wetting foliage. Treat with fungicide, following manufacturer's instructions. Remove and destroy diseased leaves and stems in the fall.
Pests
Aphids: Small, soft-bodied insects that suck moisture from plants. Ladybugs are a great way to control aphids. Consider insecticidal soaps as an alternative to pesticides.
Propagation: Endless summer hydrangeas are propagated from cuttings. For best results, begin cuttings in the early summer. To create new plants from your hydrangea, take a cutting with three leaf nodes from a stem that didn't produce blooms this year. Remove the leaves from the lower two leaf nodes. Dip cutting in rooting hormone and pot in a mixture of vermiculite and sand. Water well and cover with clear plastic, making sure the plastic doesn't come in contact with the cutting's leaves. Water when top of soil becomes dry. Cuttings should begin to root in two to three weeks.

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