Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’)

Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’) is a plant in the annuals and biennials category that can grow 50cm – 1.5m tall and 10cm – 50cm wide. In this growing guide we’ll learn the cultivation details and how to plant Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’).
This plant is commonly known as tree mallow ‘Silver Cup’.
This is a deciduous plant that takes 1-2 years to reach full maturity.
In this article
Plant profile
Common name: tree mallow ‘Silver Cup’
Scientific name: Lavatera trimestris ‘Silver Cup’
Plant type: Annual / Biennial
Habit: Bushy
Height: 50cm – 1.5m
Spread: 10cm – 50cm
Foliage: Deciduous
Sunlight: Full Sun
Soil: Chalk, Loam, Sand
Moisture: Well drained
Garden type: City & Courtyard Gardens, Informal Garden
Planting type: Flower borders and bedding
Other characteristics: Plants for pollinators, RHS Award of Garden Merit
Seasonal colors
Season | Stem | Foliage | Flower | Fruit |
---|---|---|---|---|
Spring | ||||
Summer | ||||
Autumn | ||||
Winter |

How to plant Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’) – Cephas, CC BY-SA 4.0, via Wikimedia Commons
Annuals and biennials are ideal for formal or informal flower beds, but also for growing in pots and containers of all kinds. They are important plants for their rapid growth, instant color and relatively low cost.
They are also useful plants for filling spaces between newly planted trees and shrubs, as well as in perennial beds that may need to be revived after the first spring bloom.
They are an important ingredient in country house gardens and wildflower meadows.
How to plant
In this section we will learn how to plant Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’), know its needs in terms of soil, watering and sun exposure.
Soil
Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’) is not a demanding plant regarding the type of soil and can grow in chalk, loam or sand.
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The chalky soil is pale and contains chunks of calcium-rich rock. It is a fertile and well-draining soil, almost always alkaline.
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The loam soil is dark, rich in organic matter but balanced in minerals. It offers the best of all worlds, retaining enough water for the plants, but allowing excess moisture to drain away. This is the most desired type of garden soil, perfect for most plants.
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Sandy soil is light, porous and very easy to drain. It is a soil poor in organic matter and nutrients. It is composed of relatively large mineral particles that allow water to drain quickly.
It is not very sensitive to soil acidity or alkalinity and grows well in soils with pH acid, alkaline or neutral.
Regarding drainage, Lavatera trimestris ‘Silver Cup’ likes to grow in well drained soil.
Sunlight
Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’) should be grown in full sun places.

Cultivation profiles – Growing Tree mallow ‘Silver Cup’ (Lavatera trimestris ‘Silver Cup’) – Dwight Sipler from Stow, MA, USA, CC BY 2.0, via Wikimedia Commons