Cosmea Sea Shells (Cosmos bipinnatus Sea Shells)

Cosmea Sea Shells (Cosmos bipinnatus Sea Shells) is a plant in the annuals and biennials category that can grow 50cm – 1.5m tall and 50cm – 1.5m wide. In this growing guide we’ll learn the cultivation details and how to plant Cosmea Sea Shells (Cosmos bipinnatus Sea Shells).

This plant is commonly known as cosmea Sea Shells.

This is a deciduous plant that takes 1 year to reach full maturity.

Plant profile

Common name: cosmea Sea Shells
Scientific name: Cosmos bipinnatus Sea Shells
Plant type: Annual / Biennial
Habit: Columnar / Upright
Height: 50cm – 1.5m
Spread: 50cm – 1.5m
Foliage: Deciduous
Sunlight: Full Sun
Soil: Chalk, Clay, Loam, Sand
Moisture: Moist but well drained
Garden type: Informal Garden, Patio & Container Garden
Planting type: Cut Flowers, Flower borders and bedding
Other characteristics: Plants for pollinators

Seasonal colors

How to plant Cosmea Sea Shells (Cosmos bipinnatus Sea Shells) – 阿橋 HQ, CC BY-SA 2.0, 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 Cosmea Sea Shells (Cosmos bipinnatus Sea Shells), know its needs in terms of soil, watering and sun exposure.

Soil

Cosmea Sea Shells (Cosmos bipinnatus Sea Shells) is a plant that adapts to all types of soils, chalk, clay, loam or sand.

• The chalky soil is pale and contains chunks of calcium-rich rock. It is a fertile and well-draining soil, almost always alkaline.

• Clay soil is composed of more than 25 percent clay particles. These particles have a high moisture holding capacity and the soil is heavy to dig and can be waterlogged in winter (dry in summer).

• 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.

• 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, Cosmos bipinnatus Sea Shells likes to grow in moist but well drained soil.

Sunlight

Cosmea Sea Shells (Cosmos bipinnatus Sea Shells) should be grown in full sun places.

Cultivation profiles – Growing Cosmea Sea Shells (Cosmos bipinnatus Sea Shells) – 阿橋 HQ, CC BY-SA 2.0, via Wikimedia Commons