Plant Care Helianthus Annuus

Helianthus Annuus

4.6 out of 5 (61 experiences)

Helianthus Annuus has a Fast grower plant personality Fast grower
Helianthus Annuus has a Survivor plant personality Survivor

Also known as

Common Sunflower, Common Sunflower and Sunflower

Taxonomy

Helianthus annuus
Helianthus
Asteraceae
Asterales

How to care for Helianthus Annuus

💦 Water

How often to water your Helianthus Annuus

Water needs for Helianthus Annuus
0.5 cups
every 9

Helianthus Annuus 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 Helianthus Annuus

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Common Sunflower in your home

Light needs and placement for plant Helianthus Annuus: 1ft from a window
1ft or less from
a window

Helianthus Annuus love being close to bright, sunny windows 😎.

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

Helianthus Annuus does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Helianthus Annuus

Nutrient, fertilizer, and repotting needs for Helianthus Annuus: 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 Helianthus Annuus after it doubles in size or once a year—whichever comes first.

Browse #CommonSunflower
💡 FAQs
⭐ Difficulty Level

Helianthus Annuus can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!

Benefits of Growing Common Sunflower →

Common Common Sunflower Problems →


💦 Water Needs

Helianthus Annuus 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.

Common Sunflower Water Frequency →

Common Sunflower Root Rot →


☀️ Sunlight Needs

Helianthus Annuus 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 🏡.

Common Sunflower Light Requirements →

Common Sunflower Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Helianthus Annuus 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

Helianthus Annuus 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.

Common Sunflower Humidity Needs →


🪴 Soil

Helianthus Annuus 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!

Best Soil Mix for Common Sunflower →

When and How to Successfully Repot Common Sunflower →


💩 Fertilizer

Helianthus Annuus 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!

How Much and When to Fertilize Common Sunflower →


🌎 Native Region

Helianthus Annuus is native to the Americas.


🌸 Flowers

Yes, you may see your Helianthus Annuus bloom with the right amount of sunlight and water.


⬆️ ⬇️ Growth Pattern

Helianthus Annuus grows vertically and new growth will emerge from the top of the plant.

How and When to Prune Common Sunflower →


🌦️ Growing Outdoors

USDA Hardiness Zone
Helianthus Annuus can be grown outdoors in USDA Hardiness Zones 2a-11b. Find your local hardiness zone here.

Common Sunflower Temperature Tolerance →


🌱 Propagation

The seeds of Helianthus Annuus can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.

How to Propagate Common Sunflower →


🍂 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 Helianthus Annuus, 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!


🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


Care Summary for Helianthus Annuus

Helianthus Annuus

Helianthus Annuus


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

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

Helianthus Annuus has a Fast grower plant personality Fast grower 43
Helianthus Annuus has a Survivor plant personality Survivor 23
Helianthus Annuus has a Blooms easily plant personality Blooms easily 20
Helianthus Annuus has a Large, lush leaves plant personality Large, lush leaves 14
Helianthus Annuus has a Easy to propagate plant personality Easy to propagate 14
Helianthus Annuus has a Browns easily plant personality Browns easily 8
Helianthus Annuus has a Pest magnet plant personality Pest magnet 3
@Mad307 avatar
@@Mad307
leaf-1 46 Plants
xp 3,982 XP
02/27/2022

I haven’t had it long enough to see it bloom but it has sprung up fast, even during the winter.

Fast grower Fast grower
@tt avatar
@@tt
leaf-1 5 Plants
xp 144 XP
globe Jurong West, Singapore
12/18/2021

It dies everytime:(

@tessalou avatar
@@tessalou
leaf-1 45 Plants
xp 1,860 XP
globe Withcott, Queensland
11/20/2021

Beautiful sunny flowers

Fast grower Fast grower
Large, lush leaves Large, lush leaves
Blooms easily Blooms easily
@MulchinMaeve avatar
@@MulchinMaeve
leaf-1 27 Plants
xp 514 XP
globe Toronto, Ontario
09/13/2021

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!

Fast grower Fast grower
Large, lush leaves Large, lush leaves
Easy to propagate Easy to propagate
Blooms easily Blooms easily
Survivor Survivor
Pest magnet Pest magnet
@VikkiB avatar
@@VikkiB
leaf-1 20 Plants
xp 2,058 XP
globe League City, TX
07/11/2021

Pretty

Fast grower Fast grower
Large, lush leaves Large, lush leaves
@airschl avatar
@@airschl
leaf-1 22 Plants
xp 728 XP
globe Prague, Hlavní město Praha
07/08/2021

Need to fertilize regularly if having indoor!

Fast grower Fast grower
@hobbitpanda avatar
@@hobbitpanda
leaf-1 2 Plants
xp 337 XP
globe Fairbanks, AK
06/20/2021

These grew quickly and in droves! Fairly easy to take care of… just water a bit when they get drier. They love to follow the sunlight.

Fast grower Fast grower
Survivor Survivor
@Allie_Ballie avatar
@@Allie_Ballie
leaf-1 6 Plants
xp 130 XP
globe Weatherford, TX
06/09/2021

She’s cool

Blooms easily Blooms easily
Easy to propagate Easy to propagate
Browns easily Browns easily
@joeshy avatar
@@joeshy
leaf-1 3 Plants
xp 62 XP
globe Bexhill, England
06/04/2021

growing so quickly !! love it !!

Fast grower Fast grower
Survivor Survivor
Pest magnet Pest magnet
@GrayGardens avatar
@@GrayGardens
leaf-1 3 Plants
xp 95 XP
globe South Jordan, UT
05/26/2021

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.

Fast grower Fast grower
Blooms easily Blooms easily
Browns easily Browns easily
@KizWiz avatar
@@KizWiz
leaf-1 3 Plants
xp 206 XP
globe Bristol, England
05/25/2021

The petals fall off easily

Fast grower Fast grower
Blooms easily Blooms easily
Large, lush leaves Large, lush leaves
Survivor Survivor
Browns easily Browns easily
@.d1l4r4.x avatar
@@.d1l4r4.x
leaf-1 4 Plants
xp 103 XP
05/25/2021

You need to water it everydsy or it dies

Fast grower Fast grower
Blooms easily Blooms easily
Easy to propagate Easy to propagate
Sadie avatar
@Sadie
leaf-1 3 Plants
xp 76 XP
globe Markham, Ontario
05/24/2021

Pretty leaves.

Should have given it a lot more sunlight.

@jocelynn_ruth05 avatar
@@jocelynn_ruth05
leaf-1 4 Plants
xp 139 XP
globe Collierville, TN
05/22/2021

don’t over water it

Fast grower Fast grower
Blooms easily Blooms easily
@abigailburrell avatar
@@abigailburrell
leaf-1 4 Plants
xp 151 XP
globe Bishopton, Scotland
05/18/2021

I love my sunflowers :) Harry styles and Keanu Leaves have been very good! Love them so much

Fast grower Fast grower
Easy to propagate Easy to propagate
Survivor Survivor
@Lil45.2006 avatar
@@Lil45.2006
leaf-1 3 Plants
xp 30 XP
globe Fort McMurray, Alberta
05/03/2021

Did not take long to sprout at all and they are already long and growing fast

Fast grower Fast grower
@planthoe avatar
@@planthoe
leaf-1 2 Plants
xp 12 XP
globe Simi Valley, CA
04/28/2021

browns and dies very easily and need to be watered everyday

Fast grower Fast grower
Blooms easily Blooms easily
Chahd avatar
@Chahd
leaf-1 5 Plants
xp 51 XP
04/22/2021

She’s a cutie, my baby

Fast grower Fast grower

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