Plant Care Cup Plant

Cup Plant

About Cup Plant

Cup Plant is a super rare houseplant 🌿 that is easy 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.

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

Cup Plant belongs to the Silphium genus, and is native to the Southeastern United States.


Silphium perfoliatum

Also known as

Indian-gum, cup plant, cup-plant, cupleaf rosinweed and squarestem rosinweed

How to care for Cup Plant


How often to water your Cup Plant

Water needs for Cup Plant
0.5 cups
every 9

Cup Plant 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 Cup Plant

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 Cup Plant in your home

Light needs and placement for plant Cup Plant: 1ft from a window
1ft or less from
a window

Cup Plant love being close to bright, sunny windows 😎.

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

Cup Plant does not tolerate low-light 🚫.

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


How to fertilize Cup Plant

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

Difficulty Level

Cup Plant is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Cup Plant

Cup Plant

Cup Plant

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.

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