I recently bought this Blue Watermelon Peperomia and it seems very unhealthy (especially compared to those online). The leaves are curling, rigid on the edges and some have even fallen off completely. Could anyone please give me any advice to keep this beautiful plant thriving
Peperomia tend to be fairly disease free, most problems relate to the water, too much or too little. They need well drained soil, and for the soil to dry between waterings. The best way is, every week, to place the pot in a bowl of water for 10mins, allow to drain off excess water and then return to the outer pot, that way you ensure all the soil is soaked, all excess water has drained away and the soil is left moist. Peperomia also require bright area out of direct sunlight.
There is also a peperomia virus that causes the leaves to be distended, I don't think that is the problem as you would have noticed it before purchasing it. Viruses are not treatable and the plant will need to be destroyed.