Also known as
Carelessweed, Dioecious amaranth, Palmer amaranth and Palmer's pigweed
How to care for Palmer's Amaranth
How often to water your Palmer's Amaranth
Palmer's Amaranth 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.
Water 0.5 cups every
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 Palmer's Amaranth in your home
Palmer's Amaranth love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Palmer's Amaranth does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Palmer's Amaranth in your home 🏡.
How to fertilize Palmer's Amaranth
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 Palmer's Amaranth after it doubles in size or once a year—whichever comes first.
Palmer's Amaranth 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.
Palmer's Amaranth 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 🏡.
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
Palmer's Amaranth 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!
Palmer's Amaranth 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!
Palmer's Amaranth grows vertically and new growth will emerge from the top of the plant.
USDA Hardiness Zone
Palmer's Amaranth can be grown outdoors in USDA Hardiness Zones 7a-12b. Find your local hardiness zone here.
The seeds of Palmer's Amaranth can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.
Care Summary for Palmer's Amaranth
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.