Seed Starting Supplies | Johnny's Selected Seeds

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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.

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246 Products

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Soil Block Propagation Trays – 50 Count Trays, Domes, and Flats

Soil Block Propagation Trays – 50 Count

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

Polypro Mesh Deep Tray, Black – 4 Count Support Trays

Polypro Mesh Deep Tray, Black – 4 Count

Durable trays for support and drainage.

5x5 Inserts – 100 Count Microgreens Supplies

5x5 Inserts – 100 Count

Microgreens Accessory

Ideal for small microgreen plantings.

Polypro Endurance Deep Tray (No Holes), Black – 24 Count Support Trays

Polypro Endurance Deep Tray (No Holes), Black – 24 Count

Johnny's thickest wall trays.

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.

Growlight Garden Seed Starter Kits

Growlight Garden

Complete kit for growing a garden in your home.

Johnny's 512 Mix – 2-Yard Bulk (bagged) Growing Media

Johnny's 512 Mix – 2-Yard Bulk (bagged)

Deluxe Microgreens Seed Starter Kit Microgreens Supplies

Deluxe Microgreens Seed Starter Kit

Grow microgreens indoors year-round.

New

72-Cell Grid Soil Blocking

72-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

NanoDome – 5 Count Grow Lights and Carts

NanoDome – 5 Count

LED or T5HO Strip Light Accessory

Humidity dome with groove for resting a grow light.

New

50-Cell Grid Soil Blocking

50-Cell Grid

Johnny's Commercial Soil Blocker Accessory

Great for creating an efficient assembly line.

72 Cell Plug Flats – 100 Count Cell Flats

72 Cell Plug Flats – 100 Count

Designed for fresh market growers. Square cells.