5 Clues It's Time to Upgrade Your Plants' Pots

Growing plants in containers, whether indoors or outdoors, offers numerous advantages. It allows for better drainage control, reduces pests and diseases, and offers the flexibility to move plants to maximize sunlight. However, as your plants grow, they’ll need more room to expand their roots.

Potted plants will show you clear signs when it’s time to give them more space. Ignoring these cues can lead to unhealthy plants struggling to survive. And let’s face it: nobody wants to deal with another dead plant. So, we consulted the experts to identify the key signs that it’s time to repot your plants—and the best way to do it.

5 Key Indicators It's Time to Repot Your Plants

Julia Omelchenko, a botany expert at Plantum, explains that repotting is an essential aspect of plant care, often neglected until it's too late. Knowing when to repot can not only help your plants grow but also prevent numerous health issues.

"Just like how shellfish and hermit crabs must switch to larger shells as they grow, your plants eventually outgrow their pots and need to be moved to a bigger space where their roots can stretch," says Nathan Heinrich, horticulturist and botanical designer. So with that in mind, here are the main signs to look out for.

Roots Escaping Through Drainage Holes or Surfacing Above the Soil

"When the roots begin emerging from the drainage holes, it’s a definite sign that the plant is ready for repotting," says Omelchenko. She adds, "Without enough room, the roots can become tangled, taking the shape of the container, which leads to deficiencies in water and nutrients. Check the roots by carefully removing the plant when the soil is dry. If you notice more roots than soil, it's time for a bigger pot."

Heinrich explains that roots wrapping around the surface and edges of the pot are clear indicators it’s time to repot. "If you find that the plant is mostly roots with very little soil when you remove it from its pot, that means your plant has outgrown its space," he shares.

Cracks in the Container

Have your pots or containers started developing cracks? Heinrich notes that overgrown roots can put so much pressure on the pot that it eventually cracks, and if it's a plastic pot, it could even warp out of shape.

A cracked pot can lead to poor plant health and irregular water distribution, as it may cause water to leak out, preventing your plant from absorbing enough moisture. Cracks in your containers are a significant signal that your plant is rootbound and ready for a larger pot.

Plants Need More Water than Usual

Is your plant drinking more water than usual? This could be a sign it’s time for a bigger pot. "The plant demands more water because the soil's moisture-retaining capacity has been overtaken by thirsty roots that quickly absorb the water and require frequent watering to avoid wilting," explains Heinrich.

Omelchenko points out that when the roots grow too much and the soil volume shrinks, the growing medium holds less moisture and dries out faster. This leads to wilting and negatively impacts the plant’s overall health, even with regular watering.

Growth Has Stagnated or Ceased

"If your plant stops growing during the growing season despite proper care, it could be pot-bound," says Omelchenko. "The lack of space and nutrients restricts the development of new roots, leaves, and shoots, which also affects flowering and fruiting."

Heinrich notes that when a plant becomes nutrient-deprived because the soil lacks minerals and essential nutrients, its growth slows down, and it generally loses vigor. These are clear signs that the plant needs to be repotted.

Yellowing or Shedding of Leaves

"Yellowing leaves can signal various issues such as over-watering, under-watering, nutrient shortages, pests, or disease," explains Omelchenko. "However, if the yellowing and dying leaves are primarily the older, lower ones, it typically points to insufficient space."

She adds, "Chronic stress from being root-bound can lead to substantial leaf loss, making the plant look weak and unattractive. A healthy plant is more resistant to pests and diseases, and losing leaves diminishes its energy to grow and defend itself."

How to Repot Plants Effectively

If your plants are showing any of these signs, it’s time to move them to a larger pot. Follow Omelchenko’s detailed instructions to repot your plant properly, ensuring it thrives in its new environment.

• Begin by gently removing the plant from its pot, ensuring you don't damage the roots. For plastic pots, press the sides to loosen the roots and soil from the walls. If the roots have grown through the drainage holes, you may need to cut the pot or break it (for ceramic or glass) to free the plant without harming the roots.
• Next, carefully untangle the roots using your fingers. This step ensures that the roots have enough room to grow, access oxygen, and absorb water. Remove any dead, dry, or rotten roots with sharp, clean scissors and disinfect the cuts to prevent rot.
• Choose a new pot that is 2–3 inches larger than the root ball. Ensure it has drainage holes to allow excess water to escape and prevent root rot. Place a layer of drainage material at the bottom and add fresh soil. Position the plant in the center and fill the surrounding space with more soil.
• Gently tap the pot to settle the soil and eliminate any air pockets, but don't compact the soil too much. It should remain loose to encourage root growth. Once done, continue with the proper care for your plant—regular watering, bright but indirect light, and misting if needed for high humidity.