Watermelon Peperomia Care: Peperomia Argyreia Growing Tips

If you’re looking for a plant that stays small, has gorgeous foliage, and is easy to maintain, look no further. This is all about Watermelon Peperomia care and how to grow this beautiful plant.

Despite being a tropical plant, peperomias, are easy to care for. I have 7 different species/varieties and all handle the dry desert air (I live in Tucson, AZ) like champs!

  • Common Name: Watermelon Peperomia
  • Botanical Name: Peperomia Argyreia
  • As you can see, the foliage of this plant resembles watermelon rind.
close up of the beautiful foliage of the watermelon peperomia plant

Looks just like watermelon rind to me!

Watermelon Peperomia Traits


Watermelon Peperomia plants stay compact. They’re commonly sold in 4″ and 6″ grow pots. The average size is 12″ x 12″. 

As they grow, the lower leaves spread out and relax a bit giving them a more open form.

Growth Rate

This is in general a slow grower. Here in sunny, warm Tucson, many of my indoor plants grow fast. This is a slow to moderate growing plant for me.


This is a tabletop plant. It doesn’t take up a lot of room so you can squeeze it in almost everywhere.

Why is this plant popular?

The vibrant foliage!

Related: Peperomia Obtusifolia Care, Peperomia Care, Repotting Peperomia Plants, Propagating & Pruning Baby Rubber Plant, & How to Plant Baby Rubber Plant Cuttings.

Watermelon Peperomia Care Video Guide

Some Of Our General Houseplant Guides For Your Reference: Guide To Watering Indoor Plants, Beginner’s Guide To Repotting Plants, How to Clean Houseplants, Winter Houseplant Care Guide, Plant Humidity: How I Increase Humidity For Houseplants, Buying Houseplants: 14 Tips For Indoor Gardening Newbies

Watermelon Peperomia Care


Mine is growing in moderately bright light. It’s 8′ away from a south-facing window and receives no direct light.

This is one plant that can tolerate lower light levels just fine. If the light is too low=no growth. If in hot sun=burn.

You may have to move your Watermelon Peperomia to a brighter spot in the darker winter months so it gets the light it needs. Here are more tips on Winter Houseplant Care.


I can’t tell you how often to water yours because there are variables that come into play like pot size, soil mix composition, the location where it’s growing, and your home’s environment.

In general, water your Watermelon Peperomia when the soil is 3/4 dry. In the summer months, you’ll water more often, in the winter months, less often.

Because there’s a lot of sun, heat, and lack of humidity here, I water mine every 5-6 days in the warmer months. In winter, it’s every 7-12 days. You may not need to water yours as often depending on what climate you’re in.

The thick leaves and fleshy stems store water. Don’t keep yours too wet or it’ll lead to root rot. 

It’s best if the bottom of the pot has 1 or more drainage holes so the excess water can flow out.

Too little water=drooping, too much water=drooping peperomia.

a beautiful watermelon peperomia peperomia argyreia with flowers in a tan basket

As you can see, this plant grows in a bit of an open & airy form. Those wine-colored stems on the left topped with light green are the Watermelon Peperomia flowers.


If your house is comfortable for you, it’ll be so for your indoor plants too.

Be sure to keep yours away from cold drafts as well as any blasts from air conditioning or heating vents.


Peperomias are native to subtropical and tropical regions so they prefer humid conditions. Despite this, the ones sold in the houseplant trade are mostly adaptable when it comes to humidity.

As I write this in mid-April the humidity is 11%. Dry to say the least and my Watermelon Peperomia is doing fine! 

I have this humidity reader in my living room/dining room. It’s cheap and gets the job done. I run my tabletop humidifiers when the humidity is below 30%, which is a good deal of the time here in Arizona. 

I also give my peperomia a shower in the kitchen sink every month and put it outside for an hour or so when the summer rains roll in. 

If you think yours is stressed in regards to humidity, you can also try filling a saucer with small rocks and water and put your plant on top of it. Just make sure the drain holes aren’t submerged.

You can also mist your peperomia a few times a week. Here’s the little sprayer that I’ve used for over 3 years now and it still works like a charm.

3 different types of peperomia plants on a white counter

My Peperomia caperata, Peperomia Raindrop, & Peperomia obtusifolia. Different, but all have gorgeous foliage.


The best times to feed your indoor plants are spring, summer, and early fall.

Every spring I give my houseplants (except air plants, bromeliads, and orchids) a little application of worm compost/compost. Be careful not to use too much, a 1/4″ layer for a 6″ pot will be fine. It breaks down slowly and works into the soil every time you water.

I give my peperomias a watering with Eleanor’s VF-11 3 or 4 times during the warmer months. Online orders of this product are delayed now because of the 2022 supply chain issue but keep checking back if you can’t find it locally.

Alternately, I feed with Maxsea 3-4 times per year also. We have a long growing season here so my plants need and appreciate the nourishment.

Other options would be this kelp/seaweed fertilizer and Joyful Dirt. Both are popular and get great reviews.

Fertilizing twice a year may be enough for your peperomia. Don’t overfertilize (use too much a ratio or do it too often) because many fertilizers are high in salts which can eventually burn plant roots. 


Same as with fertilizing and feeding, spring, summer, and early fall are the optimum times for repotting.

You can check out this post and video on Peperomia repotting for all the details and the step-by-step on how to do it.

Watermelon Peperomias don’t need repotting often (every 5 years if not stressed from being potbound) because they stay compact and don’t grow fast. In regards to a bigger pot, only go up 1 size. For instance, from a 4″ grow pot to a 6″ grow pot. 

In a nutshell, I use a potting mix of 1:1 potting soil to DIY succulent and cactus mix. The latter contains coco chips and coco coir (a more sustainable alternative to peat moss) which peperomias love. I also throw in a few handfuls of compost and top with worm compost.

You’ll also find alternative soil mixes suitable for peperomia repotting in the post.


Not much is needed pruning-wise with this plant. Once or twice a year I’ll snip off a dying or dead lower leaf and that’s it.

It doesn’t grow outward and trail like its cousin the Baby Rubber Plant. Because it stays compact, no need for pruning.

I do take off the spent flowers, but they easily pull right off.

looking down on the foliage of a silver/green peperomia radiator plant

You can see how dense & tight this peperomia grows as compared to the more openness of the Watermelon Peperomia.


I’ve never propagated a Watermelon Peperomia, but I have the Peperomia obtusifolia by stem cuttings and also division. 

My friend did propagate a Watermelon peperomia by stem cuttings in water. I’ve read you can also propagate it by leaf cuttings.


My peperomias have never gotten any pests. I imagine they could be prone to mealybugs because of their fleshy leaves and stems. Also, keep your eyes out for spider mites.

If your plant isn’t healthy, it’ll be more susceptible to pests.

Pests can travel from plant to plant fast and multiply overnight so make sure you get them under control as soon as you spot them.


Pet Safety

Ring the chimes! This one is listed as non-toxic to cats and dogs on the ASPCA website.


Yes, they do. The flowers are tiny, green, and appear in clusters on the ends of wine-colored stems. If your Watermelon Peperomia is healthy and happy, it’ll flower.

5 different types of peperomia plants sit on a dark orange/red patio table

A couple more of my peperomias. That’s Peperomia Hope in the white metallic pot & Peperomia Rainbow in the yellow/orange pot right behind it.

Watermelon Peperomia Care FAQS

Is Watermelon Peperomia easy to care for?

Yes, indeed. I water mine, give it a shower every now and then, feed it during the growing season and that’s about it.

How often should I water my Watermelon Peperomia? When to water Watermelon Peperomia?

I can’t give you a watering schedule because there are so many variables involved. In general, water yours when it’s 3/4 of the way dry. It’ll tell you if it’s unhappy!

Why are my Watermelon Peperomia leaves soft?

The leaves should feel smooth and slightly fleshy. If the leaves are soft, your plant could be too dry. To make things confusing, soft leaves could indicate too much water also.

Does Watermelon Peperomia like to be dry? How do you know if a Watermelon Peperomia needs water?

If it goes completely dry, the leaves & stems will droop down. Mine dried out a few weeks ago & went limp. I caught it right away & it recovered fine. If yours stays completely dry for too long, it probably won’t.

Are Watermelon Peperomias slow growers?

Yes, they are slow growers. This can be an advantage because you won’t need to find a spot with more room to move it to nor will it need pruning to control the size.

Watermelon Peperomias are sweet as can be and so easy to grow. Be sure to add one to your collection!

Happy gardening,


Signed by Nell Foster

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