Garden Cosmos

Planting season: year round in tropical climate, as they love hot weather and thrive in any humidity level.
Soil: Cosmos perform best in neutral, medium moisture, well-drained soils with a pH of 6.0 to 8.0, although they will grow in poor soil where many flowering plants languish. Avoid planting in a rich soil; it can cause the plants to get too tall and flop over. Germination takes about 10 days.
Depth: 3mm deep (sprinkle the seeds on the surface of the soil and lightly press. Do not cover with extra layer of soil as seeds need light to germinate).
Matured cosmos tends to self-seed.
Spacing: 20-30 cm apart.
Light: full sun/partial shade.
Moisture: water regularly to keep the soil moist, but not wet. Best, when soil starts to get dry to the touch.
Fertilizing: not recommended. Fertilizing can negatively impact the cosmos. Cosmos can handle poor soil. Too much fertilizer can often lead to strong plants with lots of foliage but few blooms. Unless your plants seem to be struggling, these plants do not need fertilizer.

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