To buy, sell or swap plants with other growers near you and use our full service please log in or sign up free.

Cosmos Genus

 

Sell/swap a plant
in this genus

List here any Cosmos plant not found in the Plant Finder

Cosmos | Copyright Greenplantswap 2020Cosmos | Copyright Greenplantswap 2020Cosmos | Copyright Greenplantswap 2020Cosmos | Copyright Greenplantswap 2020

General Needs

  • LightFull sun
  • HardinessFrost tender (min 5°C)
  • SoilWell drained, Fertile
  • Soil pH5.0 to 8.0
  • WaterMoist

Description

Cosmos genus. These are summer and early autumn flowering annuals and tuberous perennials. There are about 25 species. The leaves are variously lobed. The flowers are disc-shaped and bloom in pink, yellow, red and purples.

Characteristics

Annuals or Perennials

Origin

S.U.S.A and C.America

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

You can propagate the half-hardy species by basal cuttings in the spring, the annuals by seed in the autumn or spring.

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.


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
Watering

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

Production v5.9.2 (d960957)