AI-generated illustrationHosta ‘Country Mouse’ short overview
Hosta 'Country Mouse' is a registered miniature hosta introduced by Hans Hansen and Shady Oaks in 2007. Its tiny, heart-shaped blue-green leaves are edged in crisp white, forming a low, tidy clump for sheltered shade. Lavender flowers rise above the foliage in midsummer. Use this slow-growing sport of 'Bill Dress's Blue' in rock gardens, woodland paths, troughs, or small containers with evenly moist, well-drained soil.
Taxonomic classification
Hosta ‘Country Mouse’ care guide
Light and placement
Grow in partial to full shade, ideally with bright filtered light or gentle morning sun and protection from hot afternoon exposure. North- and east-facing positions are dependable; west-facing sites need shelter. Bleached margins, scorch, and papery leaf edges indicate excessive sun or drought, while stretched petioles and weaker color can indicate excessively dark conditions.
Watering and humidity
Water deeply when the surface begins to dry, keeping the root zone evenly moist rather than alternating between drought and saturation. Check containers more often during summer and reduce watering after dormancy, while preventing complete winter desiccation in exposed pots. Morning irrigation is preferable to frequent wetting of foliage.
Soil and growing medium
Use fertile, humus-rich soil that stays evenly moist but drains freely. Loam or improved sandy soil is preferable; heavy clay should be opened with organic matter and drainage improvement. Hostas tolerate acidic, neutral, and slightly alkaline conditions, with a practical target around pH 5.5–7.5.
Feeding
Apply a balanced, slow-release perennial fertilizer in spring as shoots emerge, or top-dress with compost. A second light feeding is optional on poor soil, but avoid heavy nitrogen after midsummer because it can encourage soft growth and delay dormancy. Do not fertilize drought-stressed or newly divided plants until they recover.
Growth and habit
This is a slow-growing miniature that forms a compact clump close to the ground. Establishment takes time, so avoid frequent disturbance and divide only when the plant has developed a substantial crown. Its small scale makes it useful where ordinary hostas would overwhelm the planting.
Planting and repotting
Plant in spring or early fall when the soil is workable. Set the crown at soil level, with roots spread outward rather than folded. Allow about 8–12 inches between miniature plants, depending on the desired density, and water deeply after planting. Maintain even moisture while the clump establishes.
Repot or divide container-grown plants in early spring as growth begins, or in late summer after flowering. Move the plant into only a slightly larger container with fresh, moisture-retentive but well-drained potting mix. Avoid burying the crown deeper than it was previously planted.
Propagation and pruning
Propagation
Division is the practical method. Divide established clumps in early spring or late summer, ensuring each division has roots and several viable shoots. Seed is not appropriate for preserving the named cultivar because seedlings may not reproduce its distinctive variegation.
Pruning
Remove flower scapes after bloom if seed production is not desired. Let foliage yellow naturally after frost, then cut it back and remove debris once dormant. Clearing old leaves reduces overwintering shelter for slugs and disease organisms.
Overwintering
The cultivar is suitable for outdoor overwintering in much of the United States, including cold climates when planted in the ground. Apply a light mulch after the soil cools, especially where freeze–thaw heaving is common. Protect containers from repeated freezing and thawing by sinking them, grouping them, or moving them to an unheated sheltered location.
Uses
A specialist miniature for shaded borders, woodland paths, troughs, fairy gardens, rock gardens, and small containers. Its white-edged foliage works as a low-contrast accent among ferns and other shade perennials. Do not use it as an edible hosta or forage plant, especially where dogs or cats can reach it.
Appearance
The identifying combination is very small, slightly heart-shaped blue-green leaves surrounded by a clean white margin. The foliage sits in a low, mound-like miniature clump, with upright scapes carrying lavender flowers in summer. The white edge is ornamental variegation, not a symptom of disease.
Flowering
Bell-shaped lavender flowers are carried on upright scapes above the miniature foliage and typically appear in midsummer. Flowering is secondary to the plant's ornamental leaves, but the scapes add height and seasonal contrast. Remove spent scapes if a tidier appearance is preferred.
Pollination and visitors
Hosta flowers can provide nectar for insect visitors, including bees, bumblebees, and hoverflies. The small stature of this cultivar means its ecological contribution is modest, but flowering plants in shaded gardens may still receive visits.
Diseases and pests
Diseases
Watch for hosta virus symptoms, including mottled or streaked foliage that differs from the cultivar's normal variegation. Remove suspicious plants and disinfect tools; do not compost diseased material. Good air circulation, clean stock, and avoiding overhead irrigation help reduce problems.
Pests
Slugs and snails commonly rasp holes in emerging and mature leaves, especially where mulch stays damp. Hand-pick, reduce hiding places, and use barriers or labeled controls when needed. Container plants may also attract vine weevil in some regions. Avoid unnecessary broad-spectrum insecticides.
Related diseases and pests
Only Plant Doctor profiles whose host data indicate this plant may be affected are shown here.
DiseaseImpatiens necrotic spot virus diseaseImpatiens necrotic spot orthotospovirus
DiseaseSouthern blightAthelia rolfsii
PestStrawberry foliar nematodeAphelenchoides fragariae
Environmental stressExcess light stress
Environmental stressLeaf sunburn
PestBlack Vine WeevilOtiorhynchus sulcatus
PestPeach weevilRhynchites bacchus
Toxicity and pollen
Hostas contain saponins and are listed as toxic to dogs and cats. Ingestion may cause gastrointestinal upset such as vomiting, diarrhea, or depression. Keep pets from chewing leaves, flowers, roots, or crowns; contact a veterinarian or poison-control service if significant ingestion occurs. Evidence for serious human toxicity is limited, but do not consume ornamental nursery plants.
- Typical season
- Flowering season, generally July–August in much of the United States
- Pollination / pollen
- Insect-borne flower pollen
Hosta pollen is primarily released from flowers and is transported by visiting insects rather than being broadly wind-dispersed. Airborne exposure is therefore generally low, but sensitive people should avoid handling flowers if symptoms occur and should rely on individual medical advice.
Native habitat
Hostas are woodland-edge perennials associated with sheltered, seasonally moist soils and filtered light. The cultivar is a garden selection rather than a wild population, so its natural distribution is not applicable; cultivation should recreate cool, humus-rich, moisture-retentive conditions.
Interesting fact
‘Country Mouse’ is a sport of ‘Bill Dress’s Blue’. Its miniature scale places it among the mouse-named hostas, but it is not simply a synonym for ‘Blue Mouse Ears’. The plant was introduced by Hans Hansen and Shady Oaks in 2007. Its tiny leaves are blue-green with a clean white margin.
Frequently asked questions (FAQ)
The most relevant questions about this plant, with short and direct answers.
🌱Quick care
What is Hosta 'Country Mouse'?⌄
Hosta 'Country Mouse' is a miniature, clump-forming hosta with tiny blue-green, heart-shaped leaves edged in white and short lavender flower spikes. It is grown primarily for its compact variegated foliage.
How big does Hosta 'Country Mouse' get?⌄
Hosta 'Country Mouse' typically grows about 3 inches tall and 8 inches wide. Some references list a mature spread of up to 12 inches, depending on growing conditions and maturity.
Is Hosta 'Country Mouse' a miniature hosta?⌄
Yes, Hosta 'Country Mouse' is a miniature hosta. Its small scale makes it suitable for troughs, rock gardens, containers, fairy gardens, and the front of shady borders.
What USDA hardiness zones are suitable for Hosta 'Country Mouse'?⌄
Hosta 'Country Mouse' is generally listed as hardy in USDA Zones 3 through 8. It dies back in winter and resumes growth from the crown in spring.
🌤️Environment and placement
Does Hosta 'Country Mouse' prefer sun or shade?⌄
Hosta 'Country Mouse' prefers part shade to full shade, especially filtered or dappled light. Avoid hot afternoon sun because the white leaf margins can scorch and the blue-green color may fade.
Can Hosta 'Country Mouse' grow in full shade?⌄
Yes, Hosta 'Country Mouse' can grow in full shade, provided the site has adequate moisture and airflow. Growth and flowering may be somewhat less vigorous than in bright filtered shade.
Can Hosta 'Country Mouse' tolerate morning sun?⌄
Yes, Hosta 'Country Mouse' can usually tolerate gentle morning sun when the soil remains evenly moist. Protect it from strong afternoon sun, particularly in hot parts of the United States.
What soil is best for Hosta 'Country Mouse'?⌄
Plant Hosta 'Country Mouse' in fertile, humus-rich, moist but well-drained soil. The plant dislikes both prolonged dryness and waterlogged soil, so improve heavy clay or poorly drained beds before planting.
Can Hosta 'Country Mouse' grow in a container?⌄
Yes, Hosta 'Country Mouse' grows well in a container with drainage holes and a quality potting mix. Use a shallow-to-medium container that is wider than the root ball and place it in shade or filtered light.
Where should I plant Hosta 'Country Mouse' in a small garden?⌄
Plant Hosta 'Country Mouse' along a shady path, at the front of a border, in a rock garden, or beneath taller perennials and shrubs. Its miniature size makes it easy to display without being overwhelmed by neighboring plants.
💧Care and problems
How often should I water Hosta 'Country Mouse'?⌄
Water Hosta 'Country Mouse' whenever the soil surface begins to dry, keeping the root zone evenly moist but not soggy. Newly planted specimens need more frequent watering during their first growing season and during summer heat.
Is Hosta 'Country Mouse' drought tolerant?⌄
Hosta 'Country Mouse' has some drought tolerance once established, but it performs best with consistent moisture. Miniature hostas can dry out quickly in containers or hot sites, so check them regularly.
How do I fertilize Hosta 'Country Mouse'?⌄
Apply a balanced slow-release fertilizer in spring as new growth begins, following the product label. Avoid heavy late-season fertilizing, which can encourage tender growth before winter.
Why are the leaves of Hosta 'Country Mouse' turning brown?⌄
Brown leaf edges on Hosta 'Country Mouse' usually indicate drought stress, excessive sun, hot wind, or salt buildup. Move container plants to brighter shade, maintain even moisture, and avoid fertilizer contact with the foliage.
Why is Hosta 'Country Mouse' turning yellow?⌄
Yellowing can be normal as the foliage ages and the plant enters dormancy, but widespread yellowing during active growth may indicate overwatering, poor drainage, drought, or root damage. Check soil moisture and drainage before adding fertilizer.
Do slugs eat Hosta 'Country Mouse'?⌄
Yes, slugs and snails may feed on Hosta 'Country Mouse', although its small, relatively thick leaves may suffer less damage than some larger hostas. Remove hiding places, water at the soil line, and use a pet-safe control if needed.
Is Hosta 'Country Mouse' deer resistant?⌄
No, Hosta 'Country Mouse' should not be considered deer resistant. Deer may browse the foliage, so use fencing or a deer-management product where browsing is common.
Does Hosta 'Country Mouse' die back in winter?⌄
Yes, Hosta 'Country Mouse' is deciduous and normally dies back after frost. Remove collapsed foliage once it has died back, and apply a light mulch without covering the crown deeply.
🪴Planting and repotting
When is the best time to plant Hosta 'Country Mouse'?⌄
The best planting times are spring and early fall, when temperatures are moderate and soil moisture is easier to maintain. Water thoroughly after planting and keep the root zone evenly moist while the plant establishes.
How far apart should I plant Hosta 'Country Mouse'?⌄
Space Hosta 'Country Mouse' about 8 to 12 inches apart, depending on whether you want the clumps to touch at maturity. Allow extra room for airflow and access if the site is humid or slug-prone.
How should I plant Hosta 'Country Mouse' in the ground?⌄
Set the crown at the same level it was growing in its nursery container, spread the roots through fertile soil, and water deeply. Do not bury the crown under thick mulch because excess moisture around it can promote rot.
What type of pot does Hosta 'Country Mouse' need?⌄
Use a container with drainage holes and a well-drained potting mix. Choose a pot only slightly larger than the root system because an oversized container can stay wet too long around this miniature hosta.
✂️Propagation and pruning
How do I propagate Hosta 'Country Mouse'?⌄
Propagate Hosta 'Country Mouse' by dividing the clump in early spring or late summer. Separate sections with roots and at least one growing eye, then replant them promptly and keep them evenly moist.
Can Hosta 'Country Mouse' be grown from seed?⌄
It can produce seed, but seedlings may not match the parent’s distinctive blue-green leaves and white margins. Division is the preferred method when you want plants true to Hosta 'Country Mouse'.
Should I cut back Hosta 'Country Mouse' after flowering?⌄
Cut flower scapes back after flowering if you want to keep the plant tidy or prevent seed formation. Removing the flowers is optional because the foliage remains the main ornamental feature.
⚠️Toxicity and safety
Is Hosta 'Country Mouse' toxic to dogs and cats?⌄
Yes, Hosta 'Country Mouse' is toxic to dogs and cats if eaten. Keep pets away from the plant and contact a veterinarian promptly if a pet chews or consumes it.
🌸Flowering and special interest
When does Hosta 'Country Mouse' bloom?⌄
Hosta 'Country Mouse' usually blooms in summer, often from late June through July depending on the local climate. Short scapes carry pale lavender to purple, bell-shaped flowers above the foliage.
Are the flowers of Hosta 'Country Mouse' fragrant?⌄
The flowers of Hosta 'Country Mouse' are generally not considered fragrant. This cultivar is valued more for its miniature variegated leaves than for floral scent.
Does Hosta 'Country Mouse' attract pollinators?⌄
Yes, its lavender flowers can provide nectar for bees and other small pollinators. The flowers are a seasonal bonus, although the plant is primarily grown for its foliage.





