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Seed starter greenhouses and trays are popular among gardeners for a number of reasons, the biggest reason being their ability to imitate the perfect growing environment for seed germination.
Get your seeds off to the right start simply by adding warm water to the greenhouses watertight base tray, sowing your seeds and then setting the clear humidity dome in place! Jiffy seed starter trays and greenhouses come in an assortment of sizes in order to fit your seed starting needs. Find your perfect fit today!
Greenhouses & Seed Starting Trays

Jiffy Professional Seed Starting Greenhouse with 50 Peat Pellets, 42mm Pellets
$13.99
Jiffy's fifty-celled 42mm peat pellet seed starting greenhouse is a great way to get your plants going!
Start up to 50 plants in this greenhouse tray and, as a bonus, get your seedlings off to a strong start with a help from the sample of SUPERthrive, a kelp-based vitamin for plants, that comes with this greenhouse.
Not sure how greenhouses work? Get more information here!
Includes:
- fifty (50) 42mm peat pellets
- watertight base tray
- clear humidity dome for locking-in moisture
This greenhouse kit is designed for 42mm Jiffy pellets.
Product Weight: 1.45 lbs
Package Dimensions: 23"x11"x3"
Included: Jiffy 50 Pellet Professional Greenhouse with SUPERthrive
Jiffy Professional Seed Starting Greenhouse with 25 Peat Pellets & SUPERthrive Sample, 42mm Pellets

Jiffy Professional Seed Starting Greenhouse with 25 Peat Pellets & SUPERthrive Sample, 42mm Pellets
$6.99
This 25 cell Jiffy Greenhouse is a great way to kick-off your indoor seed starting for the season!
Get 25 plants growing inside of this greenhouse tray and, as a bonus, get your seedlings started off strong with the sample of SUPERthrive -- a kelp-based vitamin for plants -- that is included! Seeds are not included.
Instructions for use included with the product. It's as simple as adding warm water and letting your peat pellets absorb and expand! For more information on Jiffy greenhouses, visit this link.
Included:
- one (1) clear plastic humidity dome
- one (1) watertight base tray
- twenty-five (25) 42mm peat pellets
- SUPERthrive sample and 6 plant markers
This greenhouse kit is designed for 42mm Jiffy pellets.
Product Weight: 0.7 lbs
Package Dimensions: 11" x 11" x 3"

Jiffy Professional Seed Starting Greenhouse with 36 Peat Pellets, 36mm Pellets
$6.99
Start up to 36 plants in this Jiffy 36 Peat Pellet Seed Starting Greenhouse.
This greenhouse is ideal for starting your plants indoors. As a bonus, get your seedlings started off strong with a sample of SUPERthrive, a kelp-based vitamin for plants!
All you have to do is add warm water and let those peat pellets absorb and expand! For more information on how to use Jiffy greenhouses, visit this link.
Contains:
- thirty-six (36) peat pellets, 36mm diameter (perfect for flowers and herbs)
- watertight base plastic tray
- clear greenhouse humidity dome
- bonus SUPERthrive Plant Vitamin sample and plant markers
*seeds are not included

Jiffy Professional Seed Starting Greenhouse with 72 Peat Pellets and SUPERthrive Sample, 36mm Pellets
$11.99
Start up to 72 plants in the Jiffy 72 Pellet Professional Greenhouse.
Our highest pellet count in a kit, this greenhouse is perfect for starting your garden indoors. As a bonus, get your seedlings started off strong with a sample of SUPERthrive, a kelp-based vitamin for plants!
Included:
- 72 Jiffy Peat Pellets, 36mm diameter (perfect for flowers and herbs)
- Base watertight plastic tray
- Clear greenhouse humidity dome
- Bonus SUPERthrive Plant Vitamin sample and plant markers
How to use:
- Expand Jiffy-7® Peat Pellets by gradually adding approximately 1/8 cup (35 ml) of warm water per pellet or approximately 10½ cups (2½ liters) to expand entire package. Add more water as needed. When pellets are fully expanded (about 1 - 1½ inches, 2.5 - 3.8 cm tall and dark brown), pour off any excess water.
- Gently pull back netting on top of pellets. Fluff and level surface peat. Sow 2 - 3 seeds per pellet. Cover lightly with peat. Place dome on tray and keep in a warm location away from direct sunlight.
- When first seeds sprout, prop dome open. When all seeds have sprouted, remove dome and place in a sunny location. After first true leaves appear, cut back all except strongest seedling in each pellet.
- Add water to tray when pellets turn light brown. Do not over water.
- To harden off plants, place outside in shade for several days (bring plants in at night). Gradually expose to full sunlight.
- To transplant, dig holes deep enough to cover top of pellets. Gently firm soil around pellet . Water.

Jiffy Professional Tomato & Vegetable Seed Starting Greenhouse with 16 Peat Pellets and SUPERthrive Sample, 50mm Pellets
$8.99
Seed starting greenhouse: get up to 16 plants growing in the Jiffy 16 Pellet Tomato & Vegetable Greenhouse.
Featuring our largest peat pellets, they are the perfect size for tomatoes and other plants with large, complex root systems. As a bonus, get your seedlings started off strong with a sample of SUPERthrive, a kelp-based vitamin for plants!
Includes:
- sixteen (16) 50mm diameter peat pellets
- base watertight plastic tray
- clear greenhouse humidity dome
- Bonus SUPERthrive Plant Vitamin sample and plant markers
*Seeds are not included.
Instructions for use included with the product. It's as simple as adding warm water and letting your peat pellets absorb and expand! For more information on Jiffy greenhouses, visit this link.

Jiffy Tomato & Vegetable Seed Starting Greenhouse with 36 Peat Pellets, SUPERthrive Sample & Plant Markers - 50mm Pellets
$14.99
Get your tomato seeds started (and other plants with larger root systems) with this Jiffy Tomato & Vegetable Starting Peat Pellet Greenhouse.
This versatile greenhouse comes with Jiffy's largest 50mm peat pellets which make it ideal for developing a larger root system before transplanting into your garden; also can be used to start other plants indoors, don't let the tomato tell you otherwise...
As a bonus, get your seedlings started off strong with a sample of SUPERthrive, a kelp-based vitamin for plants!
Includes:
- thirty-six (36) Jiffy Peat Pellets with a 50mm diameter
- one (1) watertight plastic base tray
- one (1) clear plastic greenhouse humidity dome
- Bonus SUPERthrive Plant Vitamin sample and plant markers
**Seeds are not included.
Instructions for use included with the product. It's as simple as adding warm water and letting your peat pellets absorb and expand! For more information on Jiffy greenhouses, visit this link.
Product Weight: 0.7 lbs
Package Dimensions: 10.5"x10.5"x3"

Jiffy Seed Starting Windowsill Greenhouse with 12 Peat Pellets, 36mm Pellets
$5.99
Get your seeds germinated and plants growing with the help of this Jiffy 12 Peat Pellet Windowsill Greenhouse Kit.
Seed starting has never been easier or more convenient. The peat pellets included in this windowsill greenhouse are 100% biodegradable and are designed to expand up to 7x their compressed height when moistened! This provides plenty of room for hardy root development.
Greenhouse contains:
- twelve (12) 36mm Jiffy peat pellets — great size for growing herbs and flowers seeds
- watertight base tray
- clear humidity dome for locking in moisture
Instructions for use included with the product. It's as simple as adding warm water and letting your peat pellets absorb and expand! For more information on Jiffy greenhouses, visit this link.
Product Weight: 0.25 lbs
Package Dimensions: 11" x 4.5" x 2.5"

Jiffy 72 Cell Seed Starting Greenhouse with SUPERthrive Sample
$9.99
The Jiffy 72-Cell Seed Starting Greenhouse is ideal for starting a large number of seeds indoors with any kind of sowing medium you'd like!
Simply add your sowing mix (not included), add water, sow seeds according to packet instructions (seeds not included) and cover with the clear humidity dome to retain moisture; this encourages quicker seed germination. Remove dome after seeds have germinated and begun sprouting.
Includes:
- seventy-two (72) celled tray with drainage holes
- humidity dome
- bonus SUPERthrive sample and plant markers

Jiffy Biodegradable 50 Cell Peat Strip Seed Starting Greenhouse
$9.99
This Jiffy Greenhouse contains peat strips that have a total of 50 cells for sowing seeds, a watertight base tray and clear humidity dome for locking in moisture.
Peat strips are easy to tear apart when moistened so you can transplant each seedling individually. Sowing medium and seeds are not included.
Included:
- one (1) watertight base tray
- one (1) clear humidity dome
- celled peat strips (50 total) for easy transplanting
How to Use:
- Prepare Strips: Fill peat pots in the base tray with your sowing medium (not included). We suggest using Premium Seed Starting Jiffy-Mix. Water thoroughly - enough to saturate walls of strips.
- Add Seeds: Seeds are not included. Sow your seeds according to the instructions on your seed packet. Place humidity dome.
- Germination: Once seeds have germinated, prop dome lid open. When seedlings grow true leaves remove lid completely and place in sunny location.
Added bonus: this greenhouse comes with a sample of plant vitamin SUPERthrive.
Product Weight: 1 lb
Package Dimensions: 21" x 11" x 2.5"

Jiffy Seed Starting Windowsill Greenhouse with 10 Peat Pellets, 42mm Pellets
$5.99
Easily start herb seeds, flower seeds and more with the help of this Jiffy 10 Cell Windowsill Seed Starting Greenhouse.
This little greenhouse provides just enough room for 10 different plants to establish a healthy root system before transplanting them to their forever homes! It also fits right on your windowsill!
Jiffy greenhouses are easy to use, simply add warm water, watch your peat pellets expand, gently fluff the top layer of peat and sow your seeds according to the seed packet instructions. *Seeds are not included.
Greenhouse includes:
- ten (10) 42mm diameter Jiffy Peat Pellets (great for most vegetables)
- one (1) watertight plastic tray
- one (1) clear humidity dome
Product Weight: 0.25 lbs
Package Dimensions: 11" x 4.5" x 2.5"
Included: 10 Pellet Jiffy 42mm Windowsill Greenhouse

Jiffy Self-Watering Seed Starting Greenhouse with 70 Peat Pellets, 36mm Pellets
$19.99
Seed starting made easy! This self-watering 70 peat pellet tray has a special reservoir that keeps seeds moist for up to 10 days. The wicking mat provides the correct amount of water so seedlings maintain the right level of moisture. The peat pellets are 100% biodegradable and can be planted into the ground along with the seedling, reducing transplant shock.
Included:
- 70 Jiffy peat pellets, 36mm diameter
- Watertight plastic base tray
- Water-wicking mat
Product Weight: 1.65 lbs
Package Dimensions: 21"x11"x3"

Jiffy Self-Watering Seed Starting Greenhouse with 34 Peat Pellets, 36mm Pellets
$9.99
This self-watering 34 peat pellet tray makes starting from seed easy!
The tray has a special reservoir and wicking mat that keeps seeds moist for up to 10 days. The mat wicks the correct amount of water to prevent seedlings from drying out. The 100% biodegradable peat pellets can be planted into the ground along with the seedling, reducing transplant shock.
Includes:
- thirty-four (34) Jiffy peat pellets, 36mm diameter (perfect for flowers and herbs)
- Watertight base tray
- Wicking mat
- Clear plastic greenhouse humidity dome
Product Weight: 0.85 lbs
Package Dimensions: 11"x11"x4"
Included: 34 Pellet Jiffy Self-Watering Greenhouse

Jiffy Self-Watering Seed Starting Greenhouse with 14 Peat Pellets, 50mm Pellets
$11.99
This self-watering 14 peat pellet greenhouse makes seed starting easy as pie!
The tray is made with a special reservoir and water-wicking mat that keeps seeds moist for up to 10 days. The mat wicks the correct amount of water so seedlings don't dry out too quickly. The peat pellets are 100% biodegradable and can be planted into the ground along with the seedling, keeping the roots intact to reduce transplant shock.
Includes:
- fourteen (14) Jiffy peat pellets, 50mm diameter (perfect for tomatoes and peppers)
- watertight base plastic tray
- water-wicking mat
- clear plastic greenhouse humidity dome
Product Weight: 1 lbs
Package Dimensions: 11"x11"x4"
Jiffy Professional Tomato & Vegetable Seed Starting Greenhouse with 16 Peat Pellets, 50mm Pellets

Jiffy Professional Tomato & Vegetable Seed Starting Greenhouse with 16 Peat Pellets, 50mm Pellets
$6.99
Jiffy Seed Starting 16 Peat Pellet Greenhouse with 50mm Pellets
Start up to 16 larger rooted plants such as tomatoes and vegetables in this 16 cell greenhouse. Easy to use and super convenient, just add water and seeds. Seeds are sold separately.
What you'll get:
- one (1) 16 cell watertight base tray
- one (1) clear plastic humidity dome
- sixteen (16) 50mm peat pellets**
**Peat is responsibly sourced from Canada.
Instructions for use included with the product. It's as simple as adding warm water and letting your peat pellets absorb and expand! For more information on Jiffy greenhouses, visit this link.
Jiffy Professional Tomato & Vegetable Seed Starting Greenhouse with 36 Peat Pellets, 50mm Pellets

Jiffy Professional Tomato & Vegetable Seed Starting Greenhouse with 36 Peat Pellets, 50mm Pellets
$12.99
Jiffy Seed Starting 36 Peat Pellet Greenhouse with 50mm Pellets
Start up to 36 larger rooted plants such as tomatoes and vegetables in this 36 cell greenhouse. Easy to use and super convenient, just add water and seeds. Seeds are sold separately.
What you'll get:
- one (1) 36 cell watertight base tray
- one (1) clear plastic humidity dome
- thirty-six (36) 50mm peat pellets**
**Peat is responsibly sourced from Canada.

Jiffy Biodegradable 20 Cell Peat Strip Seed Starting Windowsill Greenhouse with SUPERthrive
$7.99
Start your plants off the right, and most effective way, with Jiffy Windowsill Greenhouses!
Jiffy's series of lightweight, plastic planting trays with various small pop-out cells and humidity domes are perfect for growing vegetables and flowers. Seeds are not included.
This seed starting windowsill greenhouse contains:
- one (1) Jiffy peat strip tray containing 20 cells for planting
- one (1) white, watertight plastic base tray
- one (1) clear plastic humidity dome
This windowsill greenhouse also includes a BONUS sample of SUPERthrive, a kelp-based vitamin that will help your seedlings grow healthy and strong!
How to Use:
- Prepare Strips: Fill peat pots in the base tray with your sowing medium (not included). We suggest using Premium Seed Starting Jiffy-Mix. Water thoroughly - enough to saturate walls of strips.
- Add Seeds: Seeds are not included. Sow your seeds according to the instructions on your seed packet. Place humidity dome.
- Germination: Once seeds have germinated, prop dome lid open. When seedlings grow true leaves remove lid completely and place in sunny location.
Product Weight: 0.45 lbs
Package Dimensions: 21"x6"x3"