How to grow and care for Helianthus annuus
plant care guide about watering, fertilizing, trimming, repotting, cutting, propagating Helianthus annuus, Annual sunflower
Helianthus annuus 101 - Plant Care Instructions
Bright direct light
20C° ~28C°
Every 4 days
water
How to water Helianthus annuus
How often should I water?
check Helianthus annuus Every 4 days if it needs water when it’s very cold (below 5℃), water less frequently
When do I need to water?
the top 2-3 inches of soil is dry
When is the Dormant period?
it goes into dormancy in the Winter. during the period, 1.5~2x the watering interval you use in the warm season.
Light & Location
How much light does a Helianthus annuus need?
Bright direct light
Grow light
Light preference
Helianthus annuus likes Bright direct light, Grow light day. The brighter the space, the better this plant grows.
Check if there’s an optimal place in your house!
This plant prefers
2K ~ 20K lux to thrive!
0
20K~
2K
20K
Temperature
Natural habitat
-15
3~35℃
45
Houseplants
-15
20~28℃
45
Plants that grow in the wild and those that grow indoors prefer different temperatures. If you grow Helianthus annuus at home, make sure the temperature is 20~28℃.
Humidity
Ideal humidity
0
40~70%
100
Helianthus annuus prefers humidity about 40~70%. If necessary, increase humidity by misting, humidifier.
Fertilize
Collective Knowhow
When should I fertilize?
Only when your plant is healthy
How frequently should I fertilize?
1-2 times in growing season. A pinch for a small pot.
Characteristic
| Characteristic Name | Characteristic Value |
|---|---|
| Lifespan | Annual |
| Habitat | North America |
Is your plant sick?
Track what happened. We’ll let you know the cause and treatment shortly!
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