Hosta Care: Planting, Watering, Dividing and Protecting from Slugs

By the Garden Voila editorial team · Updated October 27, 2026 · How we verify

Hostas are shade-tolerant perennials grown for their bold foliage. Plant them in spring or early fall in partial to full shade (morning sun is fine, and gold and some blue-leaved types color best with a little sun), in rich, moist, well-drained soil amended with compost. Water about an inch a week, more in hot weather, mulch to keep roots cool, and feed lightly in spring. Divide crowded clumps in early spring or late summer. Slugs, snails and deer are the main threats. Hostas are hardy in USDA zones 3 to 8 and need a cold winter dormancy to thrive.

Hostas at a glance

What are hostas?

Hostas, once called plantain lilies or funkia, are herbaceous perennials native to Japan, Korea and China, where they grow in woodland edges, stream banks and rocky slopes. There are thousands of named cultivars with leaves in every shade of green, blue and gold, often edged or streaked with white or cream, in textures from smooth and glossy to deeply puckered. Hostas form clumps that grow larger every year and can live for decades. The South Dakota State University Extension article on hostas describes them as one of the most popular perennials for shade because they are low maintenance, long-lived and extremely cold hardy.

How much sun can hostas take?

Most hostas grow best in partial shade, with morning sun and afternoon shade or dappled light under trees. Many tolerate full shade but grow more slowly and flower less. Leaf color guides how much light a hosta wants:

• Blue-leaved hostas (‘Halcyon’, ‘Blue Angel’): need shade; their blue color is a waxy coating that melts off in sun and heat, leaving them green.
• Gold and yellow hostas (‘Sum and Substance’, ‘Gold Standard’): develop their brightest color with a few hours of morning sun.
• Variegated white-edged hostas: prefer partial shade; white areas scorch in strong sun.
• Fragrant hostas (H. plantaginea types such as ‘Royal Standard’): tolerate more sun than most if well watered.

Too much sun causes brown, scorched leaf edges, bleached patches and crispy leaves by midsummer. Even sun-tolerant hostas need consistent moisture to handle afternoon sun.

How do you plant hostas?

1. Plant in spring as shoots emerge, or in late summer to early fall, at least a month before the first frost.
2. Dig a hole twice as wide as the root ball and the same depth, and mix compost or leaf mold into the soil.
3. Set the hosta so the crown, where shoots meet roots, is level with the soil surface. Bare-root hostas should have the roots spread out and the crown just at the surface.
4. Backfill, firm gently and water thoroughly.
5. Mulch with 2 inches of shredded leaves or bark, keeping it away from the crown.
6. Water regularly for the first season.

Space hostas according to their mature width, from about 1 foot for small types to 4 feet or more for giants like ‘Sum and Substance’ and ‘Empress Wu’. They take three to five years to reach full size, so fill gaps with annuals in the meantime.

How much water do hostas need?

Hostas grow best with consistent moisture, about 1 inch of water a week, and more in hot, dry weather or when growing in sun or under thirsty trees. Water deeply at the base in the morning, ideally with a soaker hose, rather than sprinkling foliage in the evening, which encourages slugs and leaf diseases. Signs of underwatering include drooping leaves, brown, crispy margins and early dormancy in late summer. Hostas tolerate short dry spells once established, but look much better with regular watering. Avoid soggy soil, which rots crowns, especially in winter.

Should you fertilize hostas?

Hostas grow well in soil enriched with compost and need little extra feeding. In spring, as shoots emerge, top-dress with an inch of compost or apply a balanced slow-release fertilizer according to the label, keeping granules off the leaves and crown. Do not fertilize after midsummer, which encourages soft growth late in the season. A soil test tells you whether more is needed.

How do you protect hostas from slugs and snails?

Slugs and snails are the most common hosta pests, chewing ragged holes in leaves, mostly at night and in damp weather.

• Choose resistant varieties: thick, heavily textured, blue or corrugated leaves (‘Sum and Substance’, ‘Blue Angel’, ‘Halcyon’, ‘Krossa Regal’) resist slugs better than thin, smooth ones.
• Water in the morning so the soil surface dries by evening.
• Clean up debris and reduce thick mulch close to the crown where slugs hide.
• Hand-pick at night with a flashlight, or trap slugs under boards and boards turned over in the morning.
• Use beer traps: shallow containers sunk to the rim and filled with beer.
• Use iron phosphate bait, which is much safer for pets and wildlife than metaldehyde baits; follow label directions.
• Use copper bands around containers.

How do you keep deer and rabbits away from hostas?

Deer love hostas and can eat whole clumps overnight, leaving only stalks. Fencing at least 7 to 8 feet tall is the only fully reliable protection. Repellent sprays based on putrescent egg or garlic work if applied regularly, rotated, and reapplied after rain and new growth. Planting hostas close to the house, behind deer-resistant plants such as ferns, astilbe and bleeding heart, also reduces damage. Rabbits nibble young shoots in spring; low chicken-wire fences protect small plantings.

When and how do you divide hostas?

Hostas can be divided to rejuvenate large clumps, fill new areas or share with friends, although they do not need regular division. The best time is early spring, when shoots are just emerging as tight “eyes,” or late summer to early fall.

1. Water the plant the day before.
2. Dig around the clump and lift it with a spade or garden fork.
3. Cut through the crown with a sharp spade or knife, or pull apart smaller clumps by hand, keeping several shoots and roots on each piece.
4. Replant divisions at the same depth, water well and keep moist while they establish.

Should you cut off hosta flowers?

Hosta flowers, lavender or white bells on tall stalks in summer, attract hummingbirds and bees. Some varieties, such as ‘Royal Standard’ and other H. plantaginea types, have large, fragrant white flowers worth growing for. Many gardeners remove flower stalks after blooming, cutting them at the base, to keep the plant tidy and prevent seeds; others remove the stalks before they open to focus on foliage. Either approach is fine. Seedlings from hosta seed rarely look like the parent; see growing hostas from seed if you want to try.

What are common hosta problems?

Hosta virus X: what to watch for

Hosta virus X (HVX) is a serious, incurable virus that spreads through sap on tools, hands and during division. Symptoms include mottled, blotchy or ink-bleed patterns along leaf veins, puckering, twisting and stunted growth, and they can take years to appear. Some infected plants were sold for years as new cultivars because the symptoms were mistaken for interesting variegation. Buy hostas from reputable nurseries, inspect plants before buying, clean tools with a disinfectant between plants when dividing or cutting, and dig and destroy any plant with suspicious symptoms rather than composting it. The University of Nebraska–Lincoln Extension publication on hostas covers HVX and other diseases.

Hosta sizes and favorite varieties

Can you grow hostas in containers?

Hostas grow well in containers, which also protect them from slugs and voles. Use a pot with drainage holes, at least a little wider than the mature clump for small types, and a quality potting mix. Water more often than in-ground plants, since pots dry out quickly. In cold climates, protect potted hostas in winter by moving them into an unheated garage or shed, or burying the pot in the ground; they still need cold dormancy, so do not bring them into a warm house. Mini hostas are especially attractive in troughs and small pots.

The University of Minnesota Extension guide to growing hostas has more on choosing and caring for hostas in cold climates.

Good companion plants for hostas

Combine hostas with other shade lovers for contrasting textures and colors: ferns, astilbe, heuchera (coral bells), bleeding heart, Japanese forest grass, brunnera, lungwort, foamflower, Solomon’s seal and spring bulbs such as daffodils and snowdrops, which bloom before hosta leaves emerge and are hidden as they fade. Impatiens, begonias and coleus add summer color in containers nearby.

A seasonal hosta care calendar

• Early spring: clean up old leaves, divide and transplant as eyes emerge, apply compost, and start slug control.
• Late spring: plant new hostas, watch for frost on emerging leaves, and apply deer repellent.
• Summer: water about an inch a week, remove flower stalks if desired, and check for slug damage and viruses.
• Early fall: divide and plant hostas, and stop feeding.
• Late fall: after frost collapses the leaves, remove them to reduce slug eggs and disease.

Common hosta care mistakes

• Planting blue hostas in sun, which strips their color.
• Watering in the evening, which encourages slugs.
• Burying the crown too deep or under thick mulch.
• Buying cheap, unlabeled plants that may carry hosta virus X.
• Skipping fall cleanup, leaving slug eggs and disease in debris.
• Bringing potted hostas into a warm house for winter.

Browse our plant pests and diseases library for help with other problems in shade gardens.

Hosta FAQ

References used in this guide: South Dakota State University Extension, Hosta: A Shade-Loving Perennial; University of Nebraska–Lincoln Extension, Hostas; University of Minnesota Extension, Growing hostas.