What temperature can I put hydrangeas outside?

Hydrangeas don’t make great houseplants long-term. But if you live in areas where the winter temperatures go below 5 degrees on a regular basis, you can plant these in pots and over-winter them in a garage or other area where they can be dormant but not go much below 30 degrees.

What temp is too cold for hydrangea?

If these are the species in your garden, you don’t have to worry about winter kill on hydrangea. They don’t need protection unless the temperature dips below negative 30 degrees Fahrenheit (-34 C.).

When can I put my hydrangea outside?

It is always best to plant the potted hydrangea outdoors whenever possible. It should only be planted outdoors in early to mid summer as it needs time to acclimate to outdoor conditions before winter arrives.

Will 37 degrees hurt hydrangeas?

Hydrangeas are frost resistant to a degree. Some hydrangeas will tolerate cold temperatures and frost better than others, but correctly prepping them for winter, will minimize the risk of any serious damage. Hydrangeas can bounce back from superficial winter damage, but not severe winter dehydration or root damage.

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Will frost kill my hydrangea?

Depending on species-specific hydrangea cold tolerance and the time of year flower buds are produced, a late-season frost can kill tender, new growth on hydrangeas (Hydrangea spp.), resulting in little or no blooms in the coming spring and summer months.

What temperature can potted hydrangeas tolerate?

Temperature requirements

When actively blooming, they will remain in the best condition if kept cool, around 50-60 degrees. During the rest period in fall and early winter, they should be kept around 45 degrees.

Can hydrangeas survive late frost?

In the winter too! Luckily, hydrangeas can tolerate some cold and are frost resistant due to their origins in Asia. But beware of severe (night) frost. Hydrangeas can survive the frost, but the buds can be damaged.

How do you care for outdoor hydrangeas?

Hydrangea Care Tips

  1. Water at a rate of 1 inch per week throughout the growing season. …
  2. Add mulch underneath your hydrangeas to help keep the soil moist and cool. …
  3. Apply fertilizer based on your specific hydrangeas. …
  4. Protect against pests and disease by choosing cultivars with resistant traits.

Is hydrangea indoor or outdoor?

Prized for their larger-than-life blooms, hydrangeas are often thought of as outdoor plants, but they can also be successfully grown as blooming indoor houseplants.

How long do potted hydrangeas last?

You want a flowering hydrangea that feels sturdy and not soft or spongy.” If you choose a healthy bouquet, it should last up to two weeks. If you’re lucky to have garden hydrangeas, it’s easy to bring them indoors for a beautiful arrangement.

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Will hydrangeas come back after a freeze?

Even though it can be a big setback, your Hydrangea can almost always recover from damage caused by cold and frost. To treat damaged Hydrangeas, wait until the temperature has warmed up and prune back the affected growth. Your Hydrangea may still bloom this year and should be back to usual growing habits next spring.

How do you protect newly planted hydrangeas from frost?

Protect your in-ground hydrangea in winter by making a frame around the plant using stakes. Wrap chicken wire around the stakes to form a cage. Fill the cage with pine needles and/or leaves to fully insulate your plant. Oak leaves work well because they do not settle as easily as other materials.

Should I cover hydrangeas for spring frost?

Keep Them Cozy. Whether or not hydrangeas need protection depends on how cold the winter temperatures drop. If the air temperature doesn’t go below 0 degrees (zone 7) there is no need for winter protection. In colder climates, wrap or completely cover marginally hardy hydrangeas.