×
To buy, sell or swap plants and use our full service please log in or sign up – GreenPlantSwap is completely free!
Record your plants before you lose the plant labels! Just tick the ‘Garden’ box (below) on each plant. Learn more

Cosmos bipinnatus

Mexican aster

Garden

Wishlist

  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019

Features

  • BloomsJuly to October
  • Height0.3m to 2m
  • Spread0.2m to 0.6m
  • Growth HabitBranched clump
  • Flower ColourWhite-green, pink red
  • Leaf ColourMid green

Description

Cosmos bipinnatus (Mexican aster). This is an upright branching variable half-hardy annual which is native to Mexico. It can grow to a height of 2m; this will depend on the cultivar. The flower colours will vary from pink, white, yellow, orange to red; they are either single or double blooms and early or late-flowering. The flower will bloom from early summer until the frost. The leaves are feather-like and mid green.

Characteristics

Annual, Fragrant

Origin

Mexico

Interest and use

Cutting bed, containers.

Search or browse our Glossary of 3,000+ botanical and plant-related terms


Have something to say about this plant?
Click to write a post, ask a question or share a tip.


  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019
  • Cosmos bipinnatus | Copyright Greenplantswap 2019

Needs

  • LightFull sun
  • HardinessHalf hardy (min 0°C)
  • SoilClay, Light, Medium, Poor quality, Chalky
  • Soil pH7.0
  • WaterDry

Cultivation

They are half hardy to frost tender, and will need a sunny position. It will do best in moist but well drained soil. In mild areas, tubers of half hardy C.atrosanguineus may be over-wintered in ground if protected with a deep mulch.

Propagation

Annual sow direct, self-seeding

Pests, diseases or disorders

Aphids, slugs and grey mould may be troublesome.

Search or browse our Glossary of 3,000+ botanical and plant-related terms


Have something to say about this plant?
Click to write a post, ask a question or share a tip.


Have something to say about this plant?
Click to write a post, ask a question or share a tip.


Other Cosmos posts

To view Cosmos plants offered near you, enter your postcode or log in.

Get started & find out why

Posts of the WeekPosts & Events

Open your garden for Thrive
Potting

“It’s not just gardening,
it makes us healthier and happier”

Production v5.9.2 (00577d2)