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Fixing Poor Drainage in Carnivorous Plant Mixes

Repotted 9 plants in peat/perlite and peat/perlite/vermiculite (Espoma brand). Water pools 10–15 minutes. Peat not hydrated? Brand issue?

Immediate Fix: Change the Ratio

Use 3 parts perlite : 1 part peat for fast drainage. Drop vermiculite—it can be alkaline and breaks down into fines that clog pores.

Alternative Fast-Draining Mix

Equal parts peat, perlite, and silica sand (not play sand). This is our Drosophyllum mix.

Peat Quality Matters

Retail peat (Espoma, etc.) often has high mineral salts. Grower-grade coarse peat (e.g., Theriault & Hachey from OBC Northwest) is superior but sold in bulk. Rinse retail peat heavily or leach pots repeatedly.

Vermiculite Use

Opened bag? Use for non-CP houseplants or outdoor beds. Some vermiculite contains trace asbestos—another reason to avoid it for CPs.

Carnivorous Plants: Perennials for Wet Spring, Dry Summer Clay Sites in Pennsylvania; Managing Standing Water Around a Young Water Oak Tree; Bottom Watering Seedlings in Peat Pots: Preventing Overwatering; Peat Pots vs. Plastic Flats for Seed Starting; Choosing Water-Loving Trees for Poorly Drained Yards; Fixing Poor Drainage in HOA Planter with Queen Palm; Why Drainage Holes Are Essential for Temperate Carnivorous Plant Pots; Transforming a Wet, Shady Backyard into a Woodland Garden; How to Improve Poor Drainage in Your Garden; Planting Peat Pots: Remove the Pot for Best Results

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