📌 Quick Summary (TL;DR): Pruning Crowded Seedlings
- ✂️ Trimming for Space: If large seedlings are shading out smaller ones, you can prune them. Instead of removing whole leaves, try snipping large middle leaves in half to save space while keeping the “solar panels” intact.
- 🌱 Bottom Leaves: Always remove leaves that are dragging in the dirt, including the initial seed leaves (cotyledons), to prevent soil-borne diseases.
- 🔪 Topping & Suckers: If you plan to “top” a leggy tomato (cut the main stem off), leave at least one healthy lower leaf so a new side shoot (sucker) can emerge from that leaf joint.
Well, I am officially out of windowsill real estate…What to do? I figured, since I’m planning to top (cut the main stem off) some of these taller ones later anyway, I might as well trim their massive leaves right now so they stop shading out the little guys. This way, the pruning wounds have time to dry and heal while the plant is still fully rooted.
I took two whole leaves off one plant, and one leaf off two others. Here is the first one before and after the haircut.
Valtwelve (Valery) wrote:
I took two whole leaves off one plant…
It’s generally better to completely remove the lower leaves, but for the large leaves in the middle of the plant, just snip them in half!
Zulfiya wrote:
It’s generally better to completely remove the lower leaves…
That’s exactly what I’m doing. I deliberately left the very lowest leaf intact because after I chop the top of the plant off, I need a side shoot (sucker) to push out from that bottom leaf joint to become the new main stem.
Valtwelve (Valery) wrote:
Well, I am officially out of windowsill real estate…
Valery, I only trim the leaves that sit super low and physically drag in the dirt. They are going to get buried when I plant them out anyway. So far, I’ve only pinched off the cotyledons.
My starts are looking good, no flower buds yet. Tomorrow I plan to haul them out to the greenhouse so I can space them out properly, top dress their pots with a little more soil, and give them some fertilizer.
This thread mentions a few fantastic advanced techniques for managing overgrown indoor seedlings:1. “Snipping in half”: Zulfiya’s tip is gold. If a leaf is encroaching on a neighboring plant, don’t rip the whole leaf off. Just cut the leaf in half with scissors! This reduces its physical footprint but leaves half the “solar panel” attached so the plant can still generate energy.2. “Topping for Suckers”: Valery is doing something very specific here. When a tomato gets hopelessly tall and leggy indoors, you can slice the main growing tip off completely. However, you MUST leave at least one leaf below the cut. Why? Because a new side shoot (called a sucker) will eventually emerge from the “armpit” of that remaining leaf, giving you a shorter, stockier plant!
