.

Correspondingly, do hydrangeas spread?

Most hydrangeas thrive in rich, porous, somewhat moist soils. Add compost to enrich poor soil. They prefer full sun in the morning, with some afternoon shade; however, many will grow and bloom in partial shade. Space multiple hydrangeas about 3 to 10 feet apart.

One may also ask, how do you keep hydrangeas from getting bigger? Pinch out the growing tips of new wood hydrangeas when they are a few inches tall in early spring. The plant develops additional side shoots, which will be shorter with more, but smaller blooms. You can repeat the process through midspring as the plant grows, depending on how much smaller you want the plant to be.

Also question is, do Hydrangeas have deep roots?

Hydrangeas do not form a tap root, so the root ball does not have to be super deep, but it should extend down as deeply as you can handle. The width of the root ball, in this case, is more important than the depth because of the fine, fibrous roots of the hydrangea.

How long does it take for hydrangeas to grow?

Hydrangeas are classified as rapid growers, or 25 or more inches per year until the plant reaches maturity. A "tree" format plant will become at least 3 inches wide at a point 4 1/4 feet high and grow at least 13 feet high.