Astilbe Winter Care: How To Winterize Astilbe Plants

Astilbe Winter Care: How To Winterize Astilbe Plants

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By: Liz Baessler

Astilbe is a tough flowering perennial that is hardy from USDA zones 3 through 9. This means that it can survive the winter in even very harsh climates. While it should survive for years, there are a few steps you can take to give it a serious leg up and make sure it survives the cold. Keep reading to learn about care for astilbe plants in winter and how to winterize astilbe.

Winterizing Astilbe Plants

Astilbe plants like to be kept moist, so it’s important to keep watering yours until the ground freezes. After the first hard frost, put down about two inches (5 cm) of mulch around the stem. This will help regulate the temperature of the soil and keep the roots moist through the winter.

Be careful not to put the mulch down until the frost, though. While the roots like to be moist, mulch in warmer weather can trap too much water and cause the roots to rot. Astilbe winter care is as simple as that – plenty of water before the frost and a good layer of mulch to keep it there.

How to Care for Astilbe Plants in Winter

When winterizing astilbe plants, there are a couple routes you can take with the flowers. Deadheading astilbe won’t encourage new flowers, so you should leave them in place through the fall. Eventually, the flowers will dry on the stalks but should stay in place.

When winterizing astilbe plants, you can cut all the foliage off, leaving just a 3-inch (7.5 cm) stem above ground. It makes astilbe winter care a little easier, and all new growth will come back to replace it in the spring.

You can also save the flowers for dry arrangements indoors. If you want, though, you can leave the flowers in place through the winter. They’ll dry out and provide some interest in your garden when most other plants have died back. You can then cut back all the dead material in early spring to make way for new growth.

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Astilbe Winter Care Como Winterize as plantas Astilbe

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Tenha cuidado para não deixar a cobertura morta até o gelo, no entanto. Enquanto as raízes gostam de ficar úmidas, a cobertura morta em climas mais quentes pode reter muita água e fazer com que as raízes apodreçam. O cuidado com o inverno Astilbe é tão simples assim - muita água antes da geada e uma boa camada de cobertura para mantê-la ali.

Winter Care for Coral Bells

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Native to North America, coral bells (Heuchera spp.) are perfect plants for the shady area of the garden in U.S. Department of Agriculture plant hardiness zones 3 through 9, depending on the species. Even though they can grow as evergreens, coral bells, also known as alum root, might die back in your climate, especially during colder than normal winters. To ensure that their interesting foliage and flowers return the next year, give your coral bells a bit of tender-loving care during winter.

Grow coral bells in soil that is well draining, improving the soil with 2 to 4 inches of organic matter, such as compost or chopped leaves, at planting time. In established beds, gently work 1 or 2 inches of organic matter around the plants. Coral bells fare the winter much better when the soil is well draining.

Water coral bells with 1 inch of water three or four days before the first expected freeze to hydrate the plants before harder weather arrives. Water also helps the soil retain heat.

Add 2 or 3 inches of compost, shredded leaves or another fine mulch around coral bells in fall after the first frost to insulate the soil during winter in USDA plant hardiness zones 8 and 9. This addition helps prevent the soil from heaving during the winter. In time, it also breaks down to supply nutrients to the soil, improving drainage conditions at the same time.

With pruning shears, cut back the foliage that dies 3 inches above the ground in late fall or early winter. If your coral bells grow as evergreens in your climate, do not cut the foliage at this time. Wait until spring when new growth starts, and cut back any damaged, dead or unsightly stems.

Melissa Lewis is a former elementary classroom teacher and media specialist. She has also written for various online publications. Lewis holds a Bachelor of Arts in psychology from the University of Maryland Baltimore County.

Caring for Sage during Winter

The sage or Salvia officinalis shrub is regarded as a sturdy and evergreen household herb. It needs minimal care, growing to about 2 feet with minimal fertilization and watering. English Sage and the Golden Sage are the most popular sage varieties. The Salvia montana variety is best suited to survive freezing conditions.

Sage Winter Care Tips

Insulating herbs like sage during the winter season is recommended. Sages grown in pots can be simply moved indoors for the winter. Sage growing in the garden bed needs some systematic care.

Basic Winter Protection

Sage earthed-up during the spring season, to induce fresh growth, needs winter protection. You should cover up the exposed root sections with dug up garden soil. However, don’t clamp down hard on the plant.

Winter Mulching

You should mulch the sage shrub before the winters set in. Sprinkle some straw mulch around the base of the plant. You can also use organic manure for this purpose. This helps to avoid freezing of the sage’s exposed root sections and the lower stem.

Winter Pruning

Sage’s foliage tends to entangle itself, unless pruned regularly. However, cutting herbs back during the winter is not advised. Some of the sage’s stem tips may die during the cold months. Wait for freezing temperatures to pass and then prune the dead tips and clustered foliage. You shouldn't pick the sage leaves during winter. Pruning or picking tends to expose parts of the plant that can die immediately due to the cold.

Winterizing Astilbe Plants - How To Care For Astilbe Plants In Winter - garden


A popular Astilbe with deep pink flowers in dense plumes that sit above shiny dark green foliage and green stalks with a profusion of densely packed tiny flowers produced in June, July and beyond.

One of the taller Astilbes available reaching heights of around 60cm, the intense bright red plumes of ‘Red Sentinel’ with its large and shiny green leaves will light up any border displays or tubs.

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Deep ruby wine flowers with almost iridescent lime green inners make ‘Purple Joyce’ the most elegant of Astrantias.

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These Alliums have elegant lavender tinted flowers with lush green foliage


A taller and newer variety of Astilbe, flowering from May through to July and up to a height of 50cms, ‘Purple Rain’ has amazing fluffy purple/pink feather-like plumes that form above a mound of lacy green leaves.


Deep red blooms with almost black cones in the centre, Helenium ‘Ruby Charm’ is a compact variety so is perfect to grow in smaller gardens. This clump forming plant reaches an eventual height of around 60cm.


Dark red stems hold the clear densely packed pink flower plumes of Astilbe ‘Smile at Me’ giving a striking appearance in the garden borders.

Caring for Catmint

Catmint is among the easiest perennials to grow at home because it adapts to a wide range of conditions and requires little care once established. Providing 1 inch of water each week during the summer is ideal just reduce watering in late summer to prepare the plants for winter. Fertilizer or very rich soil can diminish blooming in catmint plants, so the National Gardening Association recommends spreading a layer of compost around the plants in autumn or spring to provide nutrients rather than using fertilizer. Use a 2-inch-thick layer of compost and keep it from touching the base of the stems because it can cause rot.

Catmint can sometimes be troubled by curious cats who are drawn to the plant's scent. Cats will roll on the plant or chew the leaves, which can damage the plant's appearance. Placing a sturdy wire cage over the plant will help protect it while still allowing it to grow to its full height. A wire cage will also help stop the catmint from flopping over, which can be an issue as the plants age.

Always prune plants with sharp, clean pruning shears. The University of Florida IFAS Extension recommends that pruning shear blades be treated with a sanitizing solution to kill any bacteria or viruses. Household disinfectant cleaner works well for this purpose because it kills most common bacteria without corroding or damaging metal blades, unlike bleach.

Watch the video: Astilbe - Goats Beard - False Spirea - Good shade plant - flowering perennial