You cannot grow a new plant through fiddle leaf fig leaf propagation using just a single leaf without any stem attached. A lone leaf may sprout roots and stay alive for months but it will never develop into a full plant. You need a section of stem with at least one node to grow a new fiddle leaf fig.
I learned this lesson the hard way when I tried to root six single leaves in water two years ago. All six grew roots within a month and looked healthy for a while. After six months, not one of them had grown a new leaf or any stem tissue at all.
My stem cuttings told a different story. The three cuttings I took with nodes each produced new leaves within ten weeks of rooting. One of those cuttings now stands three feet tall as a thriving plant in my bedroom.
The science behind this explains why a fiddle leaf fig single leaf cannot become a full plant. Nodes are the bumps on a stem where leaves attach to the branch. These spots contain special cells called meristematic tissue that can divide and form new stems, roots, and leaves.
A leaf cut from the stem lacks this vital tissue completely. The leaf can absorb water through roots it grows to stay alive. But without a node, it cannot create the growth points needed to produce new stems or more leaves above the soil.
Propagating fiddle leaf fig cuttings the right way starts with choosing a good stem section. Look for a piece at least six inches long with two or three leaves and one or more nodes visible along the stem. Use clean sharp scissors or pruning shears to make your cut.
You can root your cutting in water or directly in moist soil. Water rooting lets you watch the roots grow so you know when to pot up your new plant. Soil rooting skips a step but hides the root growth so you have to guess when roots form.
For water rooting, place your cutting in a clear jar with the node under water but the leaves above. Change the water every few days to keep it fresh and clear. Set the jar in bright indirect light and wait for roots to appear from the submerged node.
In my experience, expect to wait six to eight weeks before you see enough roots to pot up your cutting. Roots should reach at least two inches long before you move to soil. Shorter roots often fail to survive the switch from water to dirt.
Once you pot your rooted cutting, treat it gently for the first few weeks as it adjusts. Keep the soil moist but not soggy and avoid direct sunlight until new growth appears. Your cutting should produce its first new leaf within a month or two of potting.
Skip the single leaf method and save yourself months of waiting for nothing. A fiddle leaf fig single leaf makes a nice water feature but will never grow into a real plant. Start with a proper stem cutting and you will have a new fiddle leaf fig to enjoy.
Read the full article: How to Care for Fiddle Leaf Fig: Expert Guide