Seed Starting Supplies | Johnny's Selected Seeds

Skip to main content Skip to footer content

0

View Cart

Johnny's offers all the seed-starting and propagation supplies you need to grow your own professional-quality seedlings with efficiency. Growing your own transplants from seed provides greater control over the growing season, from start to finish, by allowing you to choose your favorite varieties, select specific planting and transplanting dates, and produce the quantities of plants you need.

Satisfaction Guarantee

251 Products

Sort By:

New

Peat-Free Potting Mix – 20 Qt Growing Media

Peat-Free Potting Mix – 20 Qt

Peat-free blend for excellent plant health.

New

Humidity Tent Grow Tents

Humidity Tent

Johnny's Commercial LED Light Cart Accessory

Full-length humidity tent for 16-tray Commercial Light Cart.

New

50-Cell Conversion Kit Soil Blocking

50-Cell Conversion Kit

Johnny's Commercial Soil Blocker Accessory

Convert your 72-cell blocker to a 50-cell configuration.

New

72-Cell Conversion Kit Soil Blocking

72-Cell Conversion Kit

Johnny's Commercial Soil Blocker Accessory

Convert your 50-cell blocker to a 72-cell configuration.

New

72-Cell Grid Soil Blocking

72-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

New

50-Cell Grid Soil Blocking

50-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

Hand Seed Sower Seed Starting Supplies

Hand Seed Sower

Saves you time and seeds.

Microgreens Reservoir Tray Microgreens Supplies

Microgreens Reservoir Tray

Microgreens Accessory

Durable and reusable.

Microgreens Growing Tray Microgreens Supplies

Microgreens Growing Tray

Microgreens Accessory

Durable and reusable.

Lightweight Deep Trays – 5 Count Support Trays

Lightweight Deep Trays – 5 Count

The standard 1020 greenhouse flat without drainage slots.

Johnny's 512 Mix – 20 Qt. Growing Media

Johnny's 512 Mix – 20 Qt.

Smart Pot® Natural – 20 Gal. Grow Bags

Smart Pot® Natural – 20 Gal.

Fabric planters promote healthy roots.

4-Cell Handheld Soil Blocker Soil Blocking

4-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

72 Cell Plug Flats – 5 Count Cell Flats

72 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

Long Dibbles Soil Blocking

Long Dibbles

Soil Blocker Accessory

Use with soil blockers to create dibbled holes for seeds or cuttings.

Soil Block Propagation Trays – 5 Count Trays, Domes, and Flats

Soil Block Propagation Trays – 5 Count

These wide-mesh bottom trays are ideal for soil block propagation.

Fort Vee All-Purpose Potting Mix – 45 Qt Growing Media

Fort Vee All-Purpose Potting Mix – 45 Qt

A popular mix for the professional grower.

50 Cell Plug Flats – 5 Count Cell Flats

50 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

20-Cell Handheld Soil Blocker Soil Blocking

20-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

Snap-in Square Dibbles Soil Blocking

Snap-in Square Dibbles

Soil Blocker Accessory

Create square indents for potting-up mini blocks.

Polypro Endurance Deep Tray (No Holes), Black – 4 Count Support Trays

Polypro Endurance Deep Tray (No Holes), Black – 4 Count

Johnny's thickest wall trays.

3 1/8" Round Fertil Pots – 90 Count Biodegradable Pots

3 1/8" Round Fertil Pots – 90 Count

100% organic, OMRI Listed® biodegradable pots.

Terrafibre Hemp Grow Mats, 5" x 5" – 40 Count Microgreens Supplies

Terrafibre Hemp Grow Mats, 5" x 5" – 40 Count

Microgreens Accessory

Microgreens media made from a renewable resource.

Maxi Square Plastic Pots – 18 Count Plastic Pots

Maxi Square Plastic Pots – 18 Count

For larger seedlings like peppers and tomatoes.

Johnny's 512 Mix – 60 Qt. Growing Media

Johnny's 512 Mix – 60 Qt.

Widger Seed Starting Supplies

Widger

A great multipurpose tool for seed starting.

Smart Pot® Natural – 10 Gal. Grow Bags

Smart Pot® Natural – 10 Gal.

Fabric planters promote healthy roots.

Fort Vee All-Purpose Potting Mix – 20 Qt Growing Media

Fort Vee All-Purpose Potting Mix – 20 Qt

A popular mix for the professional grower.

Smart Pot® Natural – 15 Gal. Grow Bags

Smart Pot® Natural – 15 Gal.

Fabric planters promote healthy roots.

Smart Pot® – 20 Gal. Grow Bags

Smart Pot® – 20 Gal.

Fabric planters promote healthy roots.

128 Cell Plug Flats – 5 Count Cell Flats

128 Cell Plug Flats – 5 Count

Designed for fresh market growers. Square cells.

5-Cell Handheld Soil Blocker Soil Blocking

5-Cell Handheld Soil Blocker

Create soil blocks for seeding and transplanting.

Jumbo Plug Inserts – 5 Count Cell Flats

Jumbo Plug Inserts – 5 Count

Large cell flats can be separated into six-packs.

SureRoots® 50-Cell Deep Plug Flats – 5 Count Cell Flats

SureRoots® 50-Cell Deep Plug Flats – 5 Count

Promotes deeper root development.

2" Clear Acrylic Domes – 5 Count Humidity Domes

2" Clear Acrylic Domes – 5 Count

Holds moisture and warmth for germination.

Johnny's Germination Mix – 20 Qt. Growing Media

Johnny's Germination Mix – 20 Qt.

Consistently a top performer in our annual germination trials.