Plant Care Black Knight

Black Knight

About Black Knight

Black Knight is a super rare houseplant 🌿 that needs very little water to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

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


Echeveria affinis 'Black Knight'

How to care for Black Knight


How often to water your Black Knight

Water needs for Black Knight
0.5 cups
every 12

Black Knight needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot located in Washington, District of Columbia.

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 Black Knight

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.

Plant care guide for Black Knight in Washington, District of Columbia

Washington, District of Columbia

32% Very Low

Growing Black Knight in Washington right now

Light needs for plant Black Knight in Washington, District of Columbia

Plant growth potential is currently low 📉

January 17th, 2022

Sunlight intensity as measured by “net radiation” in Washington is currently low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in determ…

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Light needs for plant Black Knight in Washington, District of Columbia

Sunlight will increase by 22.3% ☀️

January 18th, 2022

Washington is trending towards greater sunlight intensity!

The amount of sunlight in Washington is expected to increase by 22.3% over the next 2 weeks to an average of 8.6 megajoules of energy per…

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Light needs for plant Black Knight in Washington, District of Columbia

Daylight will increase by 0.6 hours 📈

January 18th, 2022

This month, Washington is getting an average of 6.9 hours of clear sky sunlight per day.

Hours of daylight will increase by 6.7% over the next two weeks. Your plants will get 10.0 total hours of d…

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Finding light for Black Knight in your home

Light needs and placement for plant Black Knight: 1ft from a window
1ft or less from
a window

Black Knight love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Washington, District of Columbia ⛅.

Black Knight does not tolerate low-light 🚫.


How to fertilize Black Knight

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

When to repot Black Knight

Nutrient needs for plant Black Knight in Washington, District of Columbia

Is this a good time of year to repot? No ⏳

January 13th, 2022

The growing potential in Washington is low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to re…

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Water Needs
Sunlight Needs

Care Summary for Black Knight

Black Knight

Black Knight

Greg recommends:


0.5 cups every 12 days


< 1ft from a window


Repot after 2x growth

Based on your location in Washington, District of Columbia, the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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