Botanical profile

Rubus idaeus 'K-81'

Latin name
Rubus idaeus 'K-81'
Common name
Raspberry 'K-81'
Type
Fruit shrub
Family
Rosaceae

Rubus idaeus ‘K-81’ is a hardy summer raspberry selected for its productivity and performance in cold climates. This upright, bushy raspberry develops vigorous canes bearing an abundance of bright red, medium to large-sized fruits that are firm and sweet. Harvested in early summer from the previous year's canes, it is suitable for fresh consumption, freezing, or processing. Its dense green foliage supports sustained growth and promotes pollinator activity in the garden. Ideal for rows in the vegetable garden, as a fruiting hedge, or in an edible bed, Rubus idaeus ‘K-81’ is appealing for its good cold resistance, reliable production, and ease of cultivation.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 3
Exposure
Sun
Watering
Regular watering
Fertilization
Compost or fertilizer for berries in spring
Soil type
Rich, well-drained, slightly acidic
Minimum temperature
-35°C
Plant appearance

Blooming, foliage and shape

Blooming period
Spring
Flower color
White
Fruiting
Bright red, medium to large, firm, and sweet fruits
Foliage color
Green
Foliage type
Obsolete
Shape
Upright bushy
Garden structure

Size and growth

Height
4.9 ft (1.5 m)
Width
4 ft (1.2 m)
Growth rate
Fast
Vegetable garden and yield

Companion planting, spacing and harvest

Fruit tree type
Summer-fruiting raspberry
Pet friendly
Safe for pets

Pets

Pollinators
Attracts or supports pollinating insects

Pollinators

Butterflies
Plants that attract butterflies

Butterflies

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.