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You are viewing a single post made by crawgarden in the thread called Hydrangea leaves turning brown and dry, what's going on?.
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Jul 17, 2016 9:58 AM CST
Name: Rj
Just S of the twin cities of M (Zone 4b)
Forum moderator Million Pollinator Garden Challenge Plant Identifier Garden Ideas: Level 1
You have prob already seen these tips, its from the Endless Summer group:

Hydrangea Planting in Containers
In addition to following the general care tips for Endless Summer hydrangea, there are a few pointers to help you be successful:

Soil Preparation & Fertilizer
To prepare for these plants, use a bagged potting mix instead of garden soil. Some bagged mixes have slow release fertilizer mixed in, which help the shrubs in their first year. If you buy one that doesn’t already contain fertilizer, mix in a slow-release fertilizer with a NPK ratio of 10-30-10. Leave approximately 3 inches of space between the top of the soil and the rim of the container so you have enough space to water properly. As the season progresses, you can sparingly apply a diluted liquid fertilizer up to 2 times per month to encourage bloom production. We recommend a bloom-booster formula with a NPK ratio of 10-30-20.

Are you in zone 7/8 or 9? noticed in 8 or 9 you can plant them outside with about 2 hours of morning sun.

Watering Hydrangeas
When watering your plants, fill the container to the rim and let it drain fully through the bottom drainage holes then repeat. (If your container does not have drainage holes, drill holes or find a different container that does have holes in the bottom at your local nursery.) This is important so that you can ensure the roots are getting enough water deeper in the container. During the growing season, and especially on hot and windy days, check the soil moisture daily. Hydrangeas require more water than other varieties because of their large blooms, so thoroughly watering potted plants is highly important.

Overwintering
Bring the entire container into your garage or basement for the winter months, and follow the same steps as garden-planted hydrangeas. Potted plants will not require as much mulch, but should be lightly watered throughout the winter months since they will not receive moisture from snow and rain.
As Yogi Berra said, “It's tough to make predictions, especially about the future.”

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