Repotting Houseplants: When, Why & How to Give Your Plants a Fresh Start

Houseplants don’t always need a bigger pot, but knowing when they do can make a big difference in their health and growth. Repotting gives plants fresh soil, more room for developing roots, and an opportunity to check for root problems. But bigger isn’t always better when it comes to houseplant containers. Choosing the right time and the right size pot is key.

When Is the Best Time to Repot?

For most houseplants, spring and early summer are the best times to repot. Plants are entering their active growing season and can recover more quickly from the move. That said, you don’t necessarily have to wait for spring if your plant is showing signs that it needs attention. A severely root-bound plant, a plant with poor drainage, or one that has outgrown its container may need to be repotted whenever the problem occurs.

Late summer can also be a good time to repot healthy houseplants that have been actively growing, especially before they transition back indoors for the cooler months. Avoid repotting simply because the calendar says it’s time. Instead, let the plant’s condition tell you when it’s ready.

How Do You Know If Your Plant Needs Repotting?

One of the easiest ways to tell if a plant needs a new home is to look at its roots. If roots are circling tightly around the inside of the pot, growing out of the drainage holes, or forming a dense root ball, your plant may be root-bound and ready for more room.

Other signs include:

• Water runs straight through the pot or sits on the surface instead of soaking into the soil.
• The plant dries out much faster than it used to.
• Roots are growing through the drainage holes.
• The plant has become top-heavy or is difficult to keep upright.
• Growth has slowed despite providing appropriate light, water, and fertilizer.
• The pot has become noticeably too small for the size of the plant.
• The soil has broken down, become compacted, or is no longer draining well.

Keep in mind that not every problem means your plant needs a larger pot. Yellowing leaves, wilting, or slow growth can also be caused by watering issues, inadequate light, pests, or disease. Take a moment to identify the problem before automatically moving your plant into a bigger container.

Bigger Isn’t Always Better

When it’s time to repot, one of the most common mistakes is choosing a pot that is much larger than the current one. It may seem logical to give your plant plenty of room to grow, but too much extra soil can hold excess moisture around the roots and increase the risk of root rot.

As a general rule, choose a new pot only 1–2 inches larger in diameter than the current pot for smaller houseplants. For larger plants, you can generally increase the diameter by about 2–3 inches.

For example, if your plant is currently in a 6-inch pot, move it into an 8-inch pot rather than jumping all the way to a 12-inch container.

The new pot should also have adequate drainage holes. A beautiful container without drainage can quickly become a problem for your plant.

How to Properly Repot Your Houseplant

Start by gently removing the plant from its current container. If the roots are tightly circling the root ball, gently loosen some of them with your fingers. You don’t need to completely remove all the existing soil, but this is a good opportunity to inspect the roots for anything that looks unhealthy.

Choose a quality potting mix appropriate for your plant. Different houseplants have different needs, so a tropical houseplant, succulent, cactus, or orchid may require a different type of growing medium. Stop in Guilford Garden center to see our stock of Sol Soils and Sungro Black Gold soil and choose the best one for your plant. 

Place enough fresh potting mix in the bottom of the new container so the plant will sit at approximately the same depth it was growing previously. Set the plant in the center and fill around the root ball with fresh soil. Gently firm the mix around the plant, but don’t pack it down too tightly.

After repotting, water thoroughly so the new potting mix settles around the roots. Allow excess water to drain completely, and never let the plant sit in standing water.

Don’t Forget: Repotting Doesn’t Always Mean a Bigger Pot

Sometimes a plant simply needs fresh soil rather than more space. If your plant’s roots aren’t crowded but the soil has become compacted or depleted, you can refresh the potting mix and return the plant to the same container.

This is also a good time to clean the pot, trim away dead roots if necessary, and give the plant a fresh start without dramatically increasing its container size.

A Little Room to Grow Goes a Long Way

Repotting should be about giving your houseplant what it needs—not necessarily giving it the biggest pot you can find. Pay attention to the roots, choose a container that is appropriately sized, use the right potting mix, and make sure there’s good drainage.

And if you’re not sure whether your plant needs repotting or what type of soil and container would be best, bring it by Guilford Garden Center or send us a photo. We’re happy to help you give your houseplants the fresh start they need to keep growing.

Need Help Repotting?

Not a fan of getting your hands dirty? Let us do the repotting for you! Guilford Garden Center offers professional houseplant repotting services to help give your plants the fresh start they need. There is a $25 drop-off fee for the first pot and $5 for each additional pot, plus $2 per inch of pot diameter (measured across the top of the pot) to cover soil, amendments, and labor. Bring your plants in and let our team take care of the rest!