Plant Care Sweet William

Sweet William

4.8 out of 5 (5 experiences)

Sweet William has a Blooms easily plant personality Blooms easily
Sweet William has a Survivor plant personality Survivor

About Sweet William

Sweet William is a popular houseplant 🌿 that is isn’t challenging 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 easy to bloom and being a survivor with a whopping 225 being grown with Greg around the world. Check out the reviews below for more details!🌟

Sweet William likes soil that is well draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Sweet William belongs to the Dianthus genus, and is native to the European Mountains.

⚠️ Sweet William is not safe to consume. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian. If you have children, cats, or dogs in the home, we suggest keeping this plant out of reach.


Dianthus barbatus

How to care for Sweet William


How often to water your Sweet William

Water needs for Sweet William
0.5 cups
every 9

Sweet William 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 Sweet William

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


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 Sweet William in your home

Light needs and placement for plant Sweet William: 1ft from a window
1ft or less from
a window

Sweet William love being close to bright, sunny windows 😎.

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

Sweet William does not tolerate low-light 🚫.

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


How to fertilize Sweet William

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

Difficulty Level

Sweet William is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

Water Needs
Sunlight Needs
Native Region
Growth Pattern
Growing Outdoors

Care Summary for Sweet William

Sweet William

Sweet William

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

Sweet William has a Blooms easily plant personality Blooms easily 4
Sweet William has a Survivor plant personality Survivor 2
Sweet William has a Large, lush leaves plant personality Large, lush leaves 1
Sweet William has a Browns easily plant personality Browns easily 1
Sweet William has a Fast grower plant personality Fast grower 1
Sweet William has a Easy to propagate plant personality Easy to propagate 1
Sornsuda avatar
leaf-1 5 Plants
xp 79 XP
globe Truganina, Victoria

Sweet William

Sadi avatar
leaf-1 1 Plants
xp 26 XP
globe Oak Grove, KY

Vibrant colors and beautiful mounds of blooms that will begin in early spring lasting through early winter.

Fast grower Fast grower
Blooms easily Blooms easily
Easy to propagate Easy to propagate
Survivor Survivor

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