Russian sage is a fuss-free perennial that adds color all season long and is drought resistant. With a modest 28- to 32-inch height, “Denim ‘n Lace” manages the towering and floppy growth of classic Russian sage. Plants that are fully colored resemble lavender. In Zones 4–9, hardy. Perovskia atriplicifolia ‘Denim ‘n Lace’ is its botanical name.
Pruning Russian sage requires courage. Russian sage pruning can be intimidating at first, but once you get the hang of it, your plants will become stronger and fuller and put up a more attractive flower display. Although taking tip cuttings may qualify as a pruning action by genuine botanists, pruning is not a part of the propagation of Russian sage.
Russian sage is normally pruned by the regular gardener at the beginning and end of the growth season. With its purple flower spires, Russian sage creates a purple haze in gardens starting in mid- to late summer. The silver-gray stems are encircled by whorls of the fuzzy blossoms, creating an intriguing sight. Plantings are given a great dramatic flair by foot-long flower heads. Pruning Russian sage in the spring properly paves the way for a stunning flower display.
Russian sage’s stems change from being green, soft, and succulent to having a woody component as it ages throughout the growing season. This kind of perennial flower is referred to by gardeners as a semi-woody perennial or shrubby perennial. Russian sage stems should be cut back to 18 inches at the end of the flowering season in cold climates, when the blooms have faded and a deadly frost has occurred. For a more interesting winter garden view, skip the pruning and leave the stems alone. In the coldest regions where Russian sage is hardy, it is good to leave stems in place. zone 4 and zone 5.
Stems freeze as winter approaches and subfreezing temperatures take hold. Depending on how cold it gets and how long it lasts, stems may or may not freeze to the point of death. Russian sage has two sites where new growth appears in the spring: the stems and the plant’s crown, which is where the stem tissue and roots converge. Typically, the crown is hardly visible above ground.
On Russian sage, a harsh winter may kill all of the aboveground stems, and only the crown produces new growth. Stems may only partially die back during milder winters. In this situation, the Russian sage would produce new growth from both the stems and the crown.
Snip stems back to 12 to 18 inches as springtime approaches. Leave 18 inches in place if you’re cleaning up your garden well before the last average frost date. Cut stems down to 12 inches or less if there is no longer any risk of frost.
Zones 4 to 9 are hardy for Russian sage. It might not die back significantly, if at all, throughout the winter in warmer areas. After the blossoms have faded and when winter has arrived, Russian sage should be pruned in regions with mild winters. If you don’t want to see stems throughout the winter, you can give them a severe pruning now, trimming them to a height of 6 to 12 inches. Otherwise, wait until very early spring or late winter to perform a rigorous pruning.
Pruning Russian sage right after after flowering in regions with lengthy growing seasons might encourage a second flush of bloom. Reduce plant growth by 50% to promote reblooming.
In the fall, should Russian sage be pruned?
The growth from the previous year might continue throughout the spring in regions with moderate winters. In colder regions, chilling weather kills back the top growth. Cut the stems down to 12 inches above the ground in the early spring when the buds on the stems are starting to swell in order to promote new growth from the ground level for the upcoming season.
According to Arbor Valley Nursery, pruning plants in the fall could promote early growth that is vulnerable to frost damage. Rejuvenate plants as they get older over a few years by cutting some of the older stems to the ground. Consider lifting and dividing a plant in the early spring and replanting the divisions if it grows congested over time. For terminal branching and increased bloom production, Russian sage can also benefit from mild pruning in the early summer.
How is Russian sage prepared for the winter?
Russian sage is a hardy perennial herb that thrives in Northern California’s temperate climate with the right fall maintenance and minimal winter protection. Autumn brings forth the bluish-lavender blooms, which draw butterflies and bees to the yard. The plant’s erect shape and silvery stems, which mature to heights of 3 to 5 feet, provide appeal to the home landscape even in the winter. Although Russian sage does nicely in a flower bed with a variety of flowers, it thrives in areas with dry, poor soil and rock gardens.
Mulch should be uniformly distributed 2 to 3 inches around the Russian sage plants. Mulch aids in retaining soil moisture and ensuring a constant soil temperature. Use an organic mulch, like pine needles or chopped bark.
The winter landscape will be more interesting if you leave spent Russian sage plants alone in the fall. However, excessive trimming encourages new growth, which increases the plant’s susceptibility to winter harm. If you don’t like how the Russian sage is growing unpruned, tidy up the plants with a light pruning, but wait until spring to cut the Russian sage to the ground.
Does the amount of Russian sage need to be reduced annually?
Russian sage plants require very little watering maintenance. In actuality, once established, Russian sage does well in dry soil and requires little water.
Every other year in the late fall, scatter a spoonful of all-purpose fertilizer or a shovelful of compost around each plant.
Provide a 2-inch (5-cm) coating of pine needles over the winter in areas north of USDA Zone 6 and remove them in the spring when new growth appears.
While leaving the stems and seed pods in the garden until spring adds winter interest, you can trim the stems back to a foot (.5 m) above the ground for a neater appearance.
Pruning is the main part of Russian sage care in the spring and summer. Cut the old stems back to just above the lowest tier of leaves when the new spring growth appears. Shear off the top one-third of the stems if the plant starts to sprawl or spread open in late spring or summer to promote upright growth. If the plant stops blooming in the summer, cut off the top half of the stems. This promotes new growth and a fresh blooming cycle.
By splitting the clumps or taking cuttings in the spring, you can propagate Russian sage plants. Every four to six years, divide the clumps to revitalize the plants and limit their expansion.
Can you chop Russian sage to the ground?
Cut back Russian sage, butterfly bush, and pest-free perennials in the late winter or early spring. These plants become more hardy when allowed to stand during the winter, according to research. Additionally, the winter environment is made more interesting by the form, texture, motion, and bird-attracting elements. Trim the Russian sage to a height of 4 inches or less. You can give your plants another clip if they have a tendency to flounder in the heat. Once the plants are 12 inches tall, cut them back halfway. Little Spires is a shorter (four foot tall) cultivar of Russian sage that is less prone to flopping, so those thinking about include it in their gardens might want to give it a try.
How should a sage plant be winterized?
- Trim today, prune tomorrow. To keep plants neat, give them a little trim. Till the start of spring, keep a canopy of branches intact to protect the plant from frost and drying winds. New branches will emerge from the roots even if the plant dies back to the ground.
- Mulch around the roots. Around your plants, apply a 2 to 3-inch layer of light-textured mulch. Winter mulches prevent the soil from repeatedly freezing and thawing, which harms shallow roots.
- Control the wind. If you provide them with temporary shelter from chilly winds, herbs that retain some of their leaves throughout the winter, such as sage and winter savory, will do better in the cold. Create a shelter by stapling fabric, burlap, or even bubble wrap to wooden poles to form a box or teepee.
- Maintain their sleep. Plants can be killed by mild winter weather spells that fool them into believing it is spring. By loosely piling branches of pine, juniper, and other evergreens over dormant herbs, you can shield them from unreliable weather.
- Winter is spent indoors. Herbs should be repotted and brought inside for use in cooking. In the spring, move them outside and plant them in the garden.
Russian sage is resistant to freezing.
By including Russian sage (Perovskia atriplicifolia) in the mix, your perennial gardens will attract attention. The silver-white stems and cloud of purple blooms on top of the drought-tolerant perennial’s grey-green leaves adorn the summer and fall garden. From summertime through fall frost, it is beautiful.
Its square stems and scented crushed leaves, like those of many of its cousins, are characteristics of the mint family. It is not a type of sage, despite its name.
In USDA zones 5 to 9, Russian sage is simple to grow and cold hardy. It thrives in warm regions and can handle clay or average soils as long as the drainage is excellent. However, in order to produce an abundance of flowers and strong stems that won’t topple over as they get bigger, they need full light.
Russian sage has previously won the Perennial Plant Association Plant of the Year Award for its easy care and spectacular, tubular blossoms.
How should sage be pruned for the winter?
Sage should be pruned in the early spring. The plant can struggle to survive the winter if the leaves are clipped before then. The shoots can now be pruned back to around 5 cm in February. When the weather improves after pruning, the sage will sprout new leaves and become bushier.