Plant Care Garden Cosmos

Garden Cosmos

3.7 out of 5 (6 experiences)

Garden Cosmos has a Fast grower plant personality Fast grower
Garden Cosmos has a Blooms easily plant personality Blooms easily

Also known as

Garden cosmos, Cosmos, Mixed seashell cosmos, Cosmos (Sensation Mix) and Cosmos 'Sensation Mix'


Cosmos bipinnatus

How to care for Garden Cosmos


How often to water your Garden Cosmos

Water needs for Garden Cosmos
0.5 cups
every 9

Garden Cosmos needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Garden Cosmos

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Garden Cosmos in your home

Light needs and placement for plant Garden Cosmos: 1ft from a window
1ft or less from
a window

Garden Cosmos love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Garden Cosmos does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Garden Cosmos in your home 🏡.


How to fertilize Garden Cosmos

Nutrient, fertilizer, and repotting needs for Garden Cosmos: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Garden Cosmos after it doubles in size or once a year—whichever comes first.

Difficulty Level

Garden Cosmos is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Garden Cosmos

Garden Cosmos

Garden Cosmos

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

What other plant parents say

Garden Cosmos has a Fast grower plant personality Fast grower 4
Garden Cosmos has a Blooms easily plant personality Blooms easily 2
Garden Cosmos has a Survivor plant personality Survivor 2
Garden Cosmos has a Browns easily plant personality Browns easily 2
Garden Cosmos has a Large, lush leaves plant personality Large, lush leaves 1
Jessica avatar
leaf-1 40 Plants
xp 1,779 XP
globe Las Vegas, NV

Super easy to grow in the desert, needs full sun loves hotter weather and tolerates coolish weather. I water it every other day when it’s hotter outside and every 2-3 days when it’s colder. It’s a little forgiving when you forget to water it and it perks right back up when you finally give it water. I love this plant, I grew it from seeds and got to see it bloom flowers after about 2 and half months.

Fast grower Fast grower
Blooms easily Blooms easily
Survivor Survivor
Large, lush leaves Large, lush leaves
Sunrose365 avatar
leaf-1 5 Plants
xp 80 XP
globe Martinsburg, WV

It’s got a great over turn rate!

Fast grower Fast grower
Janelle avatar
leaf-1 6 Plants
xp 94 XP
globe San Antonio, TX

Bloomed nice just hard upkeep

Browns easily Browns easily
Nasya avatar
leaf-1 5 Plants
xp 150 XP

i got the seeds as a gift and she sprouted within a week (hence her name)

Fast grower Fast grower
Survivor Survivor

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