Image 1 of 1
Image 1 of 1
Image 1 of 1
Image 1 of 1
Harbor Blue Oyster Liquid Culture – 10 ml Syringe
Pleurotus ostreatus
If you’re looking for a hardy, high-yield oyster strain that doesn’t mind a temperature swing, the Harbor Blue from Pennsylvania is a solid choice. This variety forms dense, heavy clusters of dark gray-blue caps and can push a strong first flush in both cool-season and warmer months. On a 5 lb. supplemented sawdust block, expect 1–2 lbs. on the first flush, with good follow-ups. It will also fruit on sterilized straw if you prefer a lower-cost substrate.
Culture format:
This is a 10 ml liquid culture syringe—mycelium suspended in a nutrient-rich broth. It’s beginner-friendly and works well for inoculating grain jars, grain bags, or other prepared substrates. Each syringe is sealed in a sterile sleeve and includes a sterile 16 g needle and alcohol wipe.
Use and storage tips from the lab:
Refrigerate on arrival – Shelf life is about 2 months chilled.
Shake before use – Evenly distributes the mycelium for faster colonization.
Inoculate via self-healing injection port – Keep the process clean.
Sterile technique matters – A still air box or flow hood will greatly cut contamination risk.
If reusing needles – Flame-sterilize before and after each use.
This is a forgiving strain for new growers and a dependable workhorse for experienced cultivators. Warmer or cooler season—Harbor Blue will usually keep you in oysters.
Harbor Blue Oyster Liquid Culture – 10 ml Syringe
Pleurotus ostreatus
If you’re looking for a hardy, high-yield oyster strain that doesn’t mind a temperature swing, the Harbor Blue from Pennsylvania is a solid choice. This variety forms dense, heavy clusters of dark gray-blue caps and can push a strong first flush in both cool-season and warmer months. On a 5 lb. supplemented sawdust block, expect 1–2 lbs. on the first flush, with good follow-ups. It will also fruit on sterilized straw if you prefer a lower-cost substrate.
Culture format:
This is a 10 ml liquid culture syringe—mycelium suspended in a nutrient-rich broth. It’s beginner-friendly and works well for inoculating grain jars, grain bags, or other prepared substrates. Each syringe is sealed in a sterile sleeve and includes a sterile 16 g needle and alcohol wipe.
Use and storage tips from the lab:
Refrigerate on arrival – Shelf life is about 2 months chilled.
Shake before use – Evenly distributes the mycelium for faster colonization.
Inoculate via self-healing injection port – Keep the process clean.
Sterile technique matters – A still air box or flow hood will greatly cut contamination risk.
If reusing needles – Flame-sterilize before and after each use.
This is a forgiving strain for new growers and a dependable workhorse for experienced cultivators. Warmer or cooler season—Harbor Blue will usually keep you in oysters.