You know when to transplant succulents by looking for three signs. First, your roots need to be at least 1 inch (2.5 cm) long. Second, you should see multiple true leaves on the baby plant. Third, you need a mother leaf that has shriveled up. When you see all three, your plantlet is ready.
In my experience, moving plantlets too soon leads to weeks of struggle. The babies looked big enough but their roots were still tiny. They sat there doing nothing while the ones I left longer took off right away. Now I always wait until I see clear signs before I move any new plants to their own pots.
Your mother leaf acts like a food supply for the growing baby. It sends water and nutrients to your new plant until it runs out. If you move the baby too soon, you cut off this food source before the roots can take over. Your plantlet stalls or dies because it cannot feed itself yet.
Iowa State University suggests a simple test you can use to check root strength. Give your baby plant a gentle tug. If it resists and stays put, your roots have taken hold. If it lifts right out of the soil, you need to wait more. This test tells you more than just looking at the plant from above.
Root Development
- Length check: Your roots should reach at least 1 inch or 2.5 centimeters long before you move your plant.
- Anchor test: A gentle tug should meet resistance showing that your roots have grabbed onto the soil well.
- Color check: Your healthy roots look white or light pink while brown or black roots signal rot problems.
Leaf Growth
- True leaves: Your baby plant should have at least 2-3 real leaves that look like tiny versions of the parent.
- Leaf size: Your new leaves should be firm and plump not thin or wrinkled which would mean stress.
- Growth signs: You should see new leaf growth happening which means your plant can feed itself now.
Mother Leaf Status
- Shriveled or dry: A succulent ready for repotting shows a mother leaf that has dried up and shriveled.
- Easy removal: Your old leaf should fall off on its own or come away with barely any effort at all.
- Still attached: If your mother leaf stays plump and green, wait longer since it still has nutrients to give.
When transplanting succulent pups, use a pot only slightly bigger than your root ball. A huge pot holds too much water and can rot your new plant. Fill it with fast draining soil mixed with 50% perlite for good air flow. Set your plant at the same depth it was growing before.
You should hold off on watering for about a week after you move your plant. This lets any tiny root damage heal before moisture comes in. After that first week, water lightly and let your soil dry out between drinks. Your baby succulent should settle in and start growing within a few weeks of the move.
Read the full article: How to Grow Succulents From Leaves Successfully