Prevents root rot and waterlogging
Plant of the day
Cosmos bipinnatus
Cosmos PlantHerb
Cosmos bipinnatus, commonly called the garden cosmos, Mexican aster or cosmea, is a medium-sized flowering herbaceous plant in the daisy family Asteraceae, native to the Americas. The species and its varieties and cultivars are popular as ornamental plants in temperate climate gardens.
FamilyAsteraceae
GenusCosmos
NativeNorth America
LifespanAnnual (most cultivated species)
Soil & Fertilizer Guide
The right soil and nutrients help your Cosmos Plant thrive and grow steadily.
Best Soil for Cosmos Plant
Choose a soil mix with the right balance of drainage, nutrition, and texture.
Supports healthy growth and strong roots
Ideal pH for nutrient absorption.
Balanced texture with organic matter and drainage.
Soil Mix Recipe
A recommended mix for Cosmos Plant, based on the available soil data.
40%Garden SoilBase structure
30%CocopeatMoisture retention
20%CompostOrganic nutrients
10%Perlite/SandDrainageFertilizer Guide
Use the fertilizer options from this plant's soil guide and adjust by season.
Organic Fertilizers
Liquid Fertilizers
Chemical Fertilizers
Balanced NPK for Cosmos PlantApply during active growth and reduce in winter.Ideal Ratio N:P:K = Balanced
Feeding Schedule
Adjust based on season, plant age, and growth.
Adjust based on growth
As neededAdjust based on growth
As neededAdjust based on growth
As neededAdjust based on growth
As neededAdjust based on growth
As neededImportant Note:Water the plant lightly before applying fertilizer.
Signs Your Cosmos Plant Needs Better Soil or Fertilizer
Watch for these signs and take action.
May indicate nutrient or pH imbalance.
Often points to low phosphorus or potassium.
Nutrient stress or compacted soil can slow leaf size.
Can happen when salt or fertilizer builds up.
May mean insufficient nutrients or poor soil quality.