Plant Care Centaurea Cyanus

Centaurea Cyanus

Also known as

Cornflower, Cornflower, Bachelor's button and Cornflower - blue ball

Taxonomy

Centaurea cyanus
Centaurea
Asteraceae
Asterales

How to care for Centaurea Cyanus

💦 Water

How often to water your Centaurea Cyanus

Water needs for Centaurea Cyanus
0.5 cups
every 9

Centaurea Cyanus 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 Centaurea Cyanus

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Cornflower in your home

Light needs and placement for plant Centaurea Cyanus: 1ft from a window
1ft or less from
a window

Centaurea Cyanus love being close to bright, sunny windows 😎.

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

Centaurea Cyanus does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Centaurea Cyanus

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

💡 FAQs
⭐ Difficulty Level

Centaurea Cyanus 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 Cornflower →

Common Cornflower Problems →


💦 Water Needs

Centaurea Cyanus 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.

Cornflower Water Frequency →

Cornflower Root Rot →


☀️ Sunlight Needs

Centaurea Cyanus 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 🏡.

Cornflower Light Requirements →

Cornflower Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Centaurea Cyanus 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.

Cornflower Toxicity to Cats →

Cornflower Toxicity to Dogs →

Cornflower Toxicity to Humans →


🪴 Soil

Centaurea Cyanus 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 Cornflower →

When and How to Successfully Repot Cornflower →


💩 Fertilizer

Centaurea Cyanus 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 Cornflower →


⬆️ ⬇️ Growth Pattern

Centaurea Cyanus grows vertically and new growth will emerge from the top of the plant.

How and When to Prune Cornflower →


🌦️ Growing Outdoors

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

Cornflower Temperature Tolerance →


🌱 Propagation

The seeds of Centaurea Cyanus 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 Cornflower →


🧐 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 Centaurea Cyanus

Centaurea Cyanus

Centaurea Cyanus


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.

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