Expanding the Seed Starting Area
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When I built my first seed starting shelf to grow seedlings indoors, I thought I had more than enough space. A few trays under lights seemed perfectly manageable, and honestly, that’s how most seed-starting setups begin.
But as the season progressed, my original seed-starting area began to feel crowded, and it became clear that a few changes would be helpful for the following year.
Editor’s Note: This post was written years ago and shares how my indoor seed-starting setup naturally expanded over time as I grew more plants indoors. If you’re looking for step-by-step instructions or lighting guidance, start here:
- How to Build a DIY Grow Light Shelf for Starting Seeds Indoors
- Using Grow Lights for Seedlings and Indoor Growing
Gardening as a Winter Ritual
I love gardening. It feels a lot like meditation, giving me a chance to relax, tune out the busy day, and focus on the small sounds of nature around me. The wind blowing through the trees, birds singing their various songs, and bees buzzing as they move from flower to flower all help me feel grounded.
Winters can be long here in Maine, and when the ground is frozen and covered in snow, I really miss digging in the dirt. Starting seeds indoors gives me a way to stay connected to gardening during those quiet months.
Growing transplants from seed was especially gratifying last year. Planting seeds, watching seedlings emerge from the soil, and tending to their needs allowed me to connect with the garden on a smaller, more intentional scale.
The First Grow Light Setup
The grow light shelf I assembled worked very well for my first seed-starting season. At the time, I used two 3-tier wire shelving units with two 4-foot shop lights, set up on a little-used workbench.
It was simple, affordable, and exactly what I needed to get started. The seedlings grew strong, the setup was easy to manage, and it fit neatly into the space I had available.
For a first attempt at indoor seed starting, it felt like a success.
When Things Started to Feel Crowded
As the season went on, though, things began to feel a little tight under the lights.
I found myself starting more varieties and wanting to add just one more tray at a time. Before long, the shelves were full, seedlings were competing for space, and adjusting lights became limited.
If you’ve ever felt like your seed-starting area shrank overnight, you’re not alone. That moment usually means things are going well, but it’s also a sign that the setup may need to evolve.
Expanding the Seed Starting Area
Rather than rebuilding everything from scratch, I made a few practical changes to my setup.
I moved the original shelving units to the floor and added two more wire shelving units on top. This simple adjustment doubled my seed-starting space and gave me more working room on the bench without changing the overall system.
The expanded grow light setup allowed seedlings more room to grow, improved access for watering and rotation, and made the daily routine more enjoyable.
Small Changes, Big Improvements
A few small changes made a noticeable difference:
- Better use of vertical space.
- Easier access to trays and lights.
- More flexibility as plants grew.
- Plenty of storage on the bottom shelf.
I also learned that a setup doesn’t need to be perfect to be effective. The ability to adjust shelves, raise lights, and adapt the layout mattered far more than having everything look polished.
What I Learned Along the Way
This experience taught me a few important lessons:
- Seed starting has a way of growing beyond your original plan.
- Lighting, spacing, and airflow matter more as volume increases.
- Simple systems are easier to expand than complicated ones.
Most importantly, I learned that it’s okay to adjust as you go. You don’t need to build the perfect seed-starting area from the start. You just need something that works, and the willingness to adapt when it no longer does.
If Your Seed-Starting Area Feels Tight
If your shelves are starting to feel crowded, consider it a gentle nudge rather than a problem.
Before expanding, it helps to step back and think about:
- How many plants do you realistically need?
- Which crops benefit most from early indoor starts?
- Whether small layout changes could create more usable space.
Often, a few thoughtful tweaks can carry you through another season.
Where to Go Next
If you’re ready to refine or expand your own seed-starting setup, these guides may help:
- How to Build a DIY Grow Light Shelf for Starting Seeds Indoors
- Using Grow Lights for Seedlings and Indoor Growing
- How to Start Seeds Indoors
- How to Make a Seed Starting Schedule
Seed starting doesn’t have to be perfect to be successful. Like the plants themselves, your setup can grow and improve over time.
Editor’s Note: This post was originally written in 2014 and has been lightly refreshed to reflect how my seed-starting setup evolved over time. The story and experience remain the same, with updated links to current grow-light and seed-starting guides for clarity.

Great new setup! I bought a unit like that but my wife stole it for organizing the play room in the garage. I can’t afford more lights anyway.
I also threw up my hoop covers over my nearly ready to harvest lettuce seedlings that I planted out yesterday. Didn’t check on them today but I’m hopeful. Hope yours does great too!
Liisa: Thanks! This should provide enough room.
Laura (KitsapFG): I just know I would have not had enough room this year especially after potting up tomatoes and peppers. I actually have more room on the workbench now to spread out a bit.
Daphne: I love your setup. It must be difficult to judge everything for the first year with a new garden.
Nice setup. I just hope mine is big enough this year. I may have to do some winter sowing to fit everything in.
EG: Thanks! I did have a bit of a complication when I had to figure out how to widdle down the plastic feet of one unit so that they fit into the support pipes of the bottom unit. But it worked out.
Granny: The seed starting area is in the basement (our oil tank is behind the new shelves). We keep the basement really cool during the winter. Not sure if it is as cold as your shed.
Robin: With the size of your new garden plot, I am sure you are going to need to grow more seedlings this year. Last year, I had to remove a shelf to give more room to the tomatoes and peppers when they were potted up. Things were really tight then. Hopefully, I’ll have enough space this year.
Meemsnyc: The wire shelves are really handy. The chains of the shop lights hang from the shelves above and you can adjust the shelves to any level. If I was starting from scratch instead of building onto my existing shelves, I would have picked up this unit instead: 74″H x 48″W x 18″D Steel Freestanding Shelving Unit.
It was only $70 at my Lowes. The small shelves I used were $20 each.
I am always trying to find more room under the lights! Never seems to be enough. I really like your adjusted set up – lots more room and still very attractive.
Awesome! 🙂
I love the new setup, I want one too!
Looks Good! It seems like we never have enough room for all the seedlings. I have double my area as well this year. Hopefully it will be enough!
Beautiful! I do wish I had room in the house for a nice shelf unit like that. I worry that it’s too cold out in the shed, but maybe that just makes the plants grow stronger. Hmm, there is a wall in Mr. Granny’s hideaway, that has a big book case at the moment. Maybe it could be relocated and I could take over that wall! It’s a thought for next year 😉
Look at you! I love how even though it’s been added to – it’s still very compact. I love it!