Plants have an incredible ability to flourish with just a bit of care and attention. Moving a favourite succulent into a larger, more suitable home is one of the more satisfying jobs in gardening, and one of the most useful.
To repot your plants efficiently, begin by carefully assessing their current state. Recognising signs such as roots growing through drainage holes or the plant appearing top-heavy indicates that it's ready for a new pot.
The process involves selecting the right pot, using quality soil, and handling the plant gently. With a few strategic steps and a bit of enthusiasm, you'll ensure your plants not only survive but thrive in their fresh environment.
Repotting your plants can revitalise their growth, providing them with essential space and nutrients to flourish anew.
Identifying when it's time to repot
Plants exhibit remarkable growth with attentive care, and identifying signs such as roots protruding from drainage holes or a top-heavy appearance helps determine when it's time to repot your plants. Most nursery pots are temporary containers meant for transport, not long-term growth. Repotting your plant allows you to:
- Give the roots space to expand
- Improve drainage and soil quality
- Reduce stress and prevent root binding
- Encourage healthier foliage and faster growth
Even if your plant looks fine, a proper repot gives it the best start.
Step-by-step: how to repot your plant
Choosing the right time to repot your plants can be transformative, creating strong foundations for flourishing growth and radiant beauty. Work through these eight steps in order.
1. Choose the right pot size
Select a pot that is 2 to 4 cm wider for small plants, or 5 to 10 cm wider for medium to large plants.
- Bigger is not better, as oversized pots hold excess water, causing root rot
- Ensure the pot has drainage holes
- Choose sturdy pots for tall or top-heavy plants
Getting this judgement right is the single biggest factor in a successful repot, and our complete guide to choosing the right size pot walks through it plant by plant.
2. Prepare high-quality potting mix
Different plants prefer different types of mix:
- Indoor plants: Premium indoor potting mix with perlite
- Cacti and succulents: Free-draining sandy mix
- Tropicals: Rich, chunky mix with bark pieces
- Natives: Native-safe, low-phosphorus mix
Quality potting mix helps roots establish faster and prevents moisture stress. The low-phosphorus rule for natives matters more than most people realise, as our grevillea care guide explains.
3. Remove the plant from its nursery pot
Gently tip the pot sideways and squeeze the sides to loosen the root ball. If the plant is stuck:
- Tap the bottom of the pot
- Slide a knife around the inner edge
- Water lightly beforehand to soften the soil
Avoid pulling the plant by its stem, as this can cause damage.
4. Loosen the roots, but don't tear them
If the roots are circling the pot or tightly bound, gently tease them apart. Loosening allows the roots to grow outward instead of continuing in a tight pot shape.
If the roots are extremely dense, you can lightly slice one or two shallow vertical cuts to stimulate new growth.
5. Position the plant at the correct height
Place a layer of potting mix at the bottom of the new pot. The plant should sit at the same height it was in the nursery pot, never deeper.
Planting too deep leads to stem rot.
6. Backfill with soil and firm gently
Fill the pot with fresh mix around the root ball.
- Press lightly to remove large air pockets
- Do not compact the soil too firmly, as roots need oxygen
- Leave 2 to 3 cm at the top of the pot for watering space
7. Water thoroughly
After repotting, water the plant deeply until excess drains out of the bottom. This helps settle the soil, close air gaps around the roots and reduce transplant shock.
Avoid fertilising now, as most potting mixes already contain slow-release nutrients.
8. Place the plant in the right environment
Your plant may need time to adjust. For the first week:
- Avoid direct harsh sunlight
- Keep away from draughts, heaters, and air conditioning
- Water only when needed, and do not overwater after repotting
Plants often perk up once they have settled.
Choosing the right potting mix
Quality soil is indispensable.
Selecting the right potting soil is crucial for the holistic health and robust growth of your plant. A premium potting mix should be well-draining yet moisture-retentive, balancing aeration and hydration perfectly. Different plants have unique needs; for instance, cacti and succulents thrive in a sandy, gritty mix, while ferns and tropical plants prefer a loamy, organic-rich medium. Ensure your mix is enriched with essential nutrients and is free of pests and weeds. By investing in a high-quality potting mix tailored to your plant species, you are laying a solid foundation for enduring vitality and lush foliage. Remember, the right soil composition can turn your repotting effort into a transformative success. The same principles apply in the ground, and our guide on how to prepare the soil for planting covers the garden bed equivalent.
Should you remove old soil when repotting?
Absolutely, removing some of the old soil is typically beneficial when repotting your plants. However, it should be done judiciously to avoid disturbing the roots excessively. Gently shake off or lightly remove the old soil around the root system to eliminate compacted dirt and any potential build-up of salts or fertilisers, which can negatively impact plant health. This process also allows you to inspect the roots, trimming any that are damaged or rotten. If what you find is soft, dark and smelly rather than firm and pale, our guide to understanding root rot explains how far to cut back and whether the plant can be saved. By mixing fresh, nutrient-rich potting soil with the remaining older soil, you provide an invigorated growing medium that enhances the plant's ability to absorb vital nutrients and water, setting the stage for a robust and healthy growth journey.
How often should you repot?
Most plants benefit from repotting every:
- 12 to 18 months for fast-growing species
- 2 to 3 years for slower growers
-
Any time roots spill out of drainage holes
If your plant looks stressed or dries out too quickly, it may be rootbound.
Common mistakes to avoid
- Overpotting: One classic misstep is selecting a pot that is excessively large for your plant. While it might seem beneficial to provide ample space for root expansion, an oversized pot can actually be detrimental. The surplus soil retains too much moisture, leading to root rot and poor aeration. Instead, choose a pot that is just one size larger than the current one, ensuring a balanced environment conducive to healthy growth.
- Incorrect watering post-repotting: A substantial error many make is either overwatering or under-watering their plant immediately after repotting. Newly repotted plants are in a state of adjustment and may not immediately absorb water as efficiently as they usually would. It's imperative to water thoroughly right after repotting, then allow the soil to dry out more than usual before the next watering. This restraint fortifies the plant's roots, promotes robust development, and mitigates the risk of waterlogged conditions. Our guide to overwatering and root rot covers how to judge that by weight and finger test rather than by calendar.
- Burying the plant too deep: Setting the root ball lower than it sat in the nursery pot invites collar and stem rot. Match the original soil line every time.
- Damaging the root ball: Pulling or tearing a plant free by its stem breaks the fine feeder roots that do the actual work. Loosen the pot instead.
By avoiding these common pitfalls and embracing the art of attentive care, you can master the art of repotting and witness your plants flourish with renewed vigour and vitality.
Aftercare tips for healthy plants
After the repotting process, it's essential to provide consistent and diligent aftercare to ensure your plants adapt seamlessly to their new environment. Start by placing the repotted plant in a location with optimal light conditions suited to its specific needs. Gradually acclimatise it to its new setting to minimise shock. Maintain a regular watering schedule, being mindful not to overwater; newly repotted plants require less frequent watering until they establish their roots. Monitor the plant for any signs of stress or pest activity and address issues promptly. Additionally, it's beneficial to hold off on fertilising for a few weeks, allowing the plant to stabilise before introducing nutrients. Consider misting the foliage if appropriate, especially for humidity-loving species, to support their transition.
For indoor specimens in particular, the weeks after a repot are when most losses happen, and our guide on how to keep your indoor plants alive covers the light and watering habits that carry them through. If instead you are moving something established out of a pot and into the ground, our guide to transplanting trees and shrubs covers the larger version of the same job.
FAQ on repotting your plants like a pro
Repotting plants can be a rewarding experience, enhancing their growth and vibrancy. Here are some frequently asked questions to help you repot your plants with confidence.
How do I know when it's time to repot my plant?
Look for signs like roots growing through drainage holes or the plant appearing top-heavy.
What pot size should I use for repotting?
Choose a pot that is slightly larger than the current one.
What type of soil should I use?
Use a high-quality potting mix formulated for your specific type of plant.
How do I remove the plant from its current pot without damaging it?
Turn the pot upside down, hold the base of the plant, and tap the pot's bottom to slide the plant out gently.
What should I do if the roots are rotting?
Trim away any dead or rotting roots with sterilised scissors.
How much should I water the plant after repotting?
Water thoroughly to settle the soil and mitigate transplant shock.
Where should I place my repotted plant?
Position it in a location that suits its light and humidity requirements.
Can I reuse the old soil?
It's advisable to use fresh potting mix to provide new nutrients.
How can I avoid common repotting mistakes?
Choose the correct pot size, handle the plant gently, and ensure proper watering and soil aeration.
What are the signs of transplant shock?
Wilting leaves, yellowing foliage, or stunted growth are common signs of transplant shock.
How often should I repot my plants?
Typically, repot every 1 to 2 years or when the plant shows signs of outgrowing its pot.
What aftercare tips are important for repotted plants?
Ensure adequate watering, appropriate lighting, and monitor for any signs of stress.
Ready to plant?
The right pot and the right mix do most of the work for you. Browse our pots and planters and our potting mixes and fertilisers, and see our plants for pots collection for species that genuinely thrive in containers.
