The most important factors when choosing where to plant hydrangeas are light and moisture. In the South, plant them where they will receive morning sunlight and afternoon shade. With these conditions, you can grow the extremely popular French (also called
Fall is the best season to plant hydrangeas, followed by early spring. The idea is to give the shrub plenty of time to establish a healthy root system before blooming. The best time of day to plant is early morning or late afternoon.
Adding organic materials, such as our Coco-Fiber Potting Medium and compost will improve most every soil type. Organic materials bind sandy soil particles so they retain moisture and nutrients better. They also break apart clay and silt particles, so that water can infiltrate and roots can spread.
As rapid growers—averaging about 2 feet of growth per year—larger varieties of hydrangeas can reach up to 15 feet tall. Applicable in growing zones 3 to 9, hydrangeas are a low maintenance plant that will return year after year with proper care.
Some gardeners report success in turning their hydrangeas blue by applying coffee grounds to the soil. The coffee grounds make the soil more acidic, allowing the hydrangea to more easily absorb aluminum. In addition, fruit peels, lawn clippings, peat moss and pine needles, are thought to have a similar effect.
Miracle-Gro Performance Organics Blooms Nutrition
This is an all-purpose blossom booster that's suitable for use on a wide variety of perennial and annual blooming plants, including hydrangeas. It provides various minerals, including copper, calcium, and iron, to supplement common nutrient deficiencies.
This timing will vary by region. For instance, in areas with winter freezing and snow, hydrangeas should be planted in early spring or early fall (as soon as summer heat breaks). In warmer regions with mild winters, the window for planting hydrangeas is longer, from fall all the way through to early spring.
Balanced granular fertilizers such as Espoma Rose Tone and Holly Tone are good choices. Jobes Fertilizer Spikes are another good option. Avoid using fast-release fertilizers in liquid form on hydrangeas. These products can stimulate growth in the short term but may not sustain the plant for the long haul.
Hydrangea plants require fertile, well-draining soils that receive plenty of moisture. Amend your garden soil with rich organic materials and well-decomposed compost. Mulch your garden, focusing around the base of the plants to help regulate temperature and moisture levels.
Watering Newly Planted Hydrangeas
You do not want to plant them in an area that has standing water, especially after rainfall. Hydrangeas in the ground should be watered at least 3 times a week when planted to help establish a strong root system. They have shallow roots so mulch is an absolute must!
Put the pot in a spot that is away from any direct sunlight and keep the soil slightly damp. In two to four weeks, a root system should begin to develop. You can transplant the cutting so that it can have the winter to establish a strong root system.
Water your hydrangeas in the morning before the heat of the sun is strong enough to quickly evaporate soil moisture. Try to avoid watering at night, which can encourage mold and mildew as the moisture sits through the cool night. Water your hydrangeas through the growing season as well as in late fall.
Most common hydrangeas prefer a partial sun location - ideally receiving sun in the morning hours and shade in the afternoon.
Hydrangeas are extremely popular and the cool season of fall is the best time to plant them! Here are 5 easy-to-grow, easy-to-love hydrangeas that you can plant with confidence. Anyone can grow the native Hydrangea arborescens, or smooth hydrangea, even in a chilly Zone 3 garden.
If you're wondering when to plant hydrangeas, the shrubs can go in the ground at any time of year, except when the weather is very cold or very hot or if the soil is waterlogged.
To rejuvenate the hydrangea, remove up to 1/3 of the older living stems down to the ground each summer. This will revitalize the plant. If necessary to control the size of the plant, cut back before late July to allow for buds to develop. Usually the plant will return immediately to its former size.
In the spring, I suggest getting them in the ground before the end of June. In the fall I suggest planting in September or October. Once the frost begins to set in your hydrangea will not have ample time to take up water and get comfortable in its new home before going dormant.
It's best to start adding coffee grounds to the soil months before the blooming season begins, ideally in the late fall. You can repeat the process with your typical fertilizing schedule. With a little caffeine and a lot of patience, your hydrangeas should reward your efforts come spring with the boldest blue globes.
To raise the pH (make more alkaline) you can add pelletized limestone to the soil. To lower the pH (make more acid) you can apply Soil Sulfur, Aluminum Sulfate, or Chelated Iron. Adding organic compost to the soil or using compost as mulch can also help to increase acidity and maintain acid soil conditions.
There is one more trick up the apple cider vinegar sleeve: You can actually change the color of hydrangea flowers from pink to blue. Hydrangea flowers will be pink in alkaline soil, but change to blue in acidic soil. So, mix up some apple cider vinegar and water, and give all the acid-loving plants a treat.
Mulching around your hydrangea will encourage deep roots to develop, adding to winter hardiness. Right now, your hydrangeas should be leafed out. The size and height of the plant will vary depending on how old your plant is.