Penobscot Blend™ Planting Mix

OMRI Certified Planting MixCompost + Oyster ShellsMycorrhizae + Biochar Boost1 Cu Ft BagPenobscot Blend™ Planting Mix is a straightforward way to improve the root zone when planting in native soil. This 1 cubic foot mix is built around composted manure, sphagnum peat moss, and aged bark, then finished with oyster shells and mycorrhizae to support root establishment. Its designed for trees, shrubs, and perennials, but its also a strong pick for annual beds and vegetables when you want looser texture and more life in the soil. We recommend mixing it with your existing soil rather than using it straight, because its meant to improve what you already have.In beds and borders, Penobscot Blend helps with both drainage and aeration, which is exactly what newly planted roots need while theyre settling in. The endomycorrhizae (Glomus intraradices) supports water and nutrient uptake as roots expand, and the small amount of wood biochar adds another layer of soil conditioning. Its a practical, season-long upgrade for planting holes, refreshed borders, and new garden areas that need better structure.

Product SpecsBag size: 1 cubic footIdeal for: Trees, shrubs, perennialsIngredients: Composted manure, sphagnum peat moss, aged bark, oyster shells, mycorrhizaeActive ingredients: Glomus intraradices 0.07 spores/g; 0.1% wood biocharProduct TipsDig a hole twice as wide as the root ball and about as deep, then set the crown slightly above grade.Mix equal parts Penobscot Blend with the soil you removed, then backfill and pack lightly.Water thoroughly right after planting and keep moisture consistent until established.Feed as needed with an organic plant food after plants start putting on new growth.FAQsWhat is Penobscot Blend™ best used for?Its designed as a planting amendment for annuals, perennials, roses, shrubs, and trees, and its especially well suited to trees, shrubs, and perennials.Whats in the mix?Composted manure, sphagnum peat moss, aged bark, oyster shells, and mycorrhizae.Does it contain mycorrhizae?Yes. It includes endomycorrhizae (Glomus intraradices) listed at 0.07 spores per gram.Is it certified for organic use?Yes, its OMRI certified.Should I use it straight or blend it with native soil?Blend it with the surrounding soil (often a 50/50 mix in the planting hole) for the best transition and root establishment.