Greenhouse Hack for Starting Seeds for your Garden

Updated on May 20, 2016

Build a Miniature Greenhouse with an Everyday Item

I love using basic things in my home to accomplish what I need to complete a project. I'm at a time in my life where I am giving no longer needed items to my grown kids to declutter and simplify my home.

For the purpose of starting Seeds to plant in my garden or in decorative pots, I was looking around for ideas to create a repurposed or reusable container. I've found it and would like to share with you how I'm using a underbed or gift wrap roll storage container, regular Gardening items, and basic household and kitchen accessories to create my Mini-Greenhouse setup.

Seed Starting for my Flower Garden

Zinnias, Marigolds, and Petunias, oh my!
Zinnias, Marigolds, and Petunias, oh my!
Source

Supplies needed for your mini-greenhouse

  • Lidded storage container
  • Plant trays
  • Seed starting ~or~ potting soil
  • Seeds
  • Water & Watering Can
  • OPTIONAL: Heating Pad for what I call "Quick Sprouting" (explained below) and regulating indoor overnight temperatures

How to set up a tabletop DIY Greenhouse

  • Open storage container upside down or place separated top on surface.
  • Try arranging trays to fit. Cut and remove some cells to fit if needed.
  • Fill cells with soil. Tamp down and water until wet. Top off with more soil if needed and repeat watering. If soil or seedstarter seems to float, I may leave until the next day, and redampen medium.
  • Plant seeds according to packets. Mark rows or individual cells if more than 1 type of seeds are planted. A few marking ideas are shown below.
  • Add water to tray at least 1/8" deep. It's important for Seeds to stay wet instead of just damp for the first 24 hours to kick-start the rooting process. This also helps with many coated seeds.
  • Cover, and proceed to "Quick Sprouting" below.

Suggested Tools you may already have for tending your garden transplants

My favorite multiuse Tool for Seed sowing and general Crafts and small item Repairs

My Green Reusable Tools List

  • Spray bottle formerly contained hairspray
  • Plastic Fork perfect size for digging in small cell seeding tray
  • A Plastic knife for tamping new plantings
  • Plastic knives are also good for labeling rows
  • Outside thermometer for checking temperature, and humidity if available
  • Tweezers or Forceps (see Forceps in bowl and available above)
  • Plastic smooth bottom bowl for selecting seeds for sowing
  • Small funnel for pouring seeds and returning unused seeds to packet.

Plant Marker Label Options ~ I'm using plastic Knives and Clothes Pins

Click thumbnail to view full-size
Wooden Clothes Pins with Seed Packet if all seeds are usedPlastic knives with permanent marker labelsReverse side of knive labels for other info like watering directives
Wooden Clothes Pins with Seed Packet if all seeds are used
Wooden Clothes Pins with Seed Packet if all seeds are used
Plastic knives with permanent marker labels
Plastic knives with permanent marker labels
Reverse side of knive labels for other info like watering directives
Reverse side of knive labels for other info like watering directives

How to "Quick Sprout"

Supplies needed

  • Heating pad
  • 2 Towels
  • and your covered mini greenhouse

Simple Instructions

  • Place towel on tabletop or other desired location
  • Place green house on top
  • Place heating pad on top greenhouse
  • Place other towel over heating pad entirely covering greenhouse
  • Set heating pad on lowest setting.
  • Leave covered and heating for 3 days.

It really doesn't make sense that this super charges seeds, but it does work for many plants.

This process does take a little follow-up to acclimate. For the first day I suggest removing cover and heating pad to allow your new seedlings to adjust to light. The second day, check for moisture and add water if needed. Then open cover during daylight hours. Return to regular schedule.

A little Assistance in warming the seedlings is always Welcome

Click thumbnail to view full-size
Kitty Kisses lending her body heat to the cause.  Yeah, sure.And does this help?  Um, no.How about both paws...?
Kitty Kisses lending her body heat to the cause.  Yeah, sure.
Kitty Kisses lending her body heat to the cause. Yeah, sure.
And does this help?  Um, no.
And does this help? Um, no.
How about both paws...?
How about both paws...?

Nighttime Schedule for Maintaining Greenhouse seedlings

Indoors

At night, if indoor temperatures are expected to be less than 65-70 degrees, place heating pad set on lowest temperature and cover with towel.

If temperatures are expected to between 65-70 just close cover and skip heating pad, but cover with towel. Real plants appreciate evening darkness, too.

Outdoors

If temperature expect to be at least 65 degrees, your plants will love having a night out, but won't appreciate the stress of heavy due or rain yet due to immature fraility.


How to maintain a Mini Greenhouse during Daytime hours

During the day, if Outdoor temperatures are expected to be above 60 and partly sunny, feel free to take your greenhouse outside, flip off the top, and let your little garden seedlings enjoy the natural sunshine. They will also appreciate windy breezes which makes their stalks stronger. If all day sun or higher temperatures are expected, try to find a place that will give some shade in the afternoon. New little plants will overcome heat wilting and sunburn, but those incidents will delay the process since recovery does make the plants work harder to fix themselves instead of growing.

Return to house in evening for temperatures below 65, and follow the Nighttime process.

Have you ever tried Seed Starting before the Growing Season?

Have you ever tried Seed Starting indoors?

See results

Use a Thermometer with Humidity for Best Results

65-70 degrees is the optimum temperature range for quickly sprouting seedlings. Higher Humidity levels are ideal to help this process along.
65-70 degrees is the optimum temperature range for quickly sprouting seedlings. Higher Humidity levels are ideal to help this process along.

Watering maintenance for your new greenhouse plants

Test the moisture in the tray cells.

If a finger pressed on the soil is:

  • slightly damp, it's good
  • dry, water it
  • wet, drain tray if needed, and leave the top off to dry a bit ~or~ place outdoors in temperate weather

More Garden Hacks using eco-friendly Green Tips, and with an English accent, too.

Questions & Answers

    Any Suggestions or Questions about this DIY Greenhouse Instruction? Please post here. Thanks for stopping by!

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      • RTalloni profile image

        RTalloni 

        2 years ago from the short journey

        Thanks for sharing your ideas and method to quick sprout seeds. I've waited too long to try starting some gloriosa lily seeds and this may get me some blooms this summer. :)

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