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4.6 out of 5 (61 experiences)


About Common Sunflower
Common Sunflower is a super popular houseplant 🌿 that is a fun challenge to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.
Plant parents describe this plant as a fast grower and being a survivor with a whopping 2266 being grown with Greg around the world. Check out the reviews below for more details!🌟
Common Sunflower likes soil that is well draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.
Taxonomy
Helianthus annuus
Helianthus
Asteraceae
Asterales
Also known as
Sunflower

How to care for Common Sunflower

How often to water your Common Sunflower

every 9
Common Sunflower 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.
Water 0.5 cups every
9

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 Common Sunflower in your home

a window
Common Sunflower love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Common Sunflower does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Common Sunflower in your home 🏡.

How to fertilize Common Sunflower

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 Common Sunflower after it doubles in size or once a year—whichever comes first.

Common Sunflower can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!
Water Needs
Common Sunflower prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Common Sunflower requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.
Toxicity
Common Sunflower is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.
Humidity
Common Sunflower doesn’t require additional humidity. Plants absorb most water through their root system rather than their leaves, so the best way to provide humidity for your plants is through watering the soil.
Soil
Common Sunflower does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Common Sunflower should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
Native Region
Common Sunflower is native to the Americas.
Flowers
Yes, you may see your Common Sunflower bloom with the right amount of sunlight and water.
Growth Pattern
Common Sunflower grows vertically and new growth will emerge from the top of the plant.
Growing Outdoors
USDA Hardiness Zone
Common Sunflower can be grown outdoors in USDA Hardiness Zones 2a-11b. Find your local hardiness zone here.
Propagation
The seeds of Common Sunflower can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.
Yellow Leaves
Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.
Overwatering and root rot are the most likely cause of problems in Common Sunflower, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.
Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!
Care Summary for Common Sunflower
Common Sunflower
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












Beautiful, sunny, and immediately brighten up a garden.
However if you have squirrels in your area - these will also immediately serve as a tasty snack for them the day they are put outside.
If you plant alongside something squirrels hate however - like Geraniums or Hyacinths - they’ll keep them from becoming lunch!











I gave it 3 stars because it was a few feet tall and still in a pot that I think was too small for it.
It’s better for people who live in warmer weather.
I’d also recommend growing it outside so it can take up the space it needs and get a lot of sunlight.



