{"product_id":"mollys-red-lava-rock","title":"Molly's Red Lava Rock - Screened 6-9 mm Lava Rock for Top Dressing, Drainage and Custom Blends","description":"\u003c!-- VP-MC-REDLAVA-TLDR-2026-10-23 --\u003e\n\u003cdiv class=\"vp-tldr\" style=\"background:#f7f4ec;border-left:4px solid #2f6b3a;padding:18px 22px;margin:0 0 24px;border-radius:6px;\"\u003e\n\u003cp style=\"margin:0 0 10px;font-weight:700;font-size:1.05em;\"\u003eQuick answer: what is Molly's Red Lava Rock?\u003c\/p\u003e\n\u003cul style=\"margin:0 0 0 18px;padding:0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat it is:\u003c\/strong\u003e natural red lava rock (scoria), screened to 6 to 9 mm (1\/4 to 3\/8 in).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor:\u003c\/strong\u003e top dressing, drainage layers and custom mixes for houseplants, aroids, succulents, cacti and bonsai.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the bag:\u003c\/strong\u003e 100% red lava rock, 3 dry quarts (3.3 L), in a resealable stand-up bag. Fills about seven 4-inch pots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable and reusable.\u003c\/strong\u003e Rinse before use to remove natural dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA single component, not a potting mix.\u003c\/strong\u003e For a ready-to-use blend, choose one of Molly's potting mixes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- \/VP-MC-REDLAVA-TLDR-2026-10-23 --\u003e\n\u003cp\u003eRed lava rock, also called scoria, is a porous volcanic rock formed when gas is trapped in cooling lava and leaves small holes behind. In a potting mix, that porous structure holds moisture and releases it slowly to plants. Molly's Red Lava Rock is 100% natural, with no dyes, additives or fillers.\u003c\/p\u003e\n\u003cp\u003eUse it to build a mix around what your plants need. It's screened to remove excess dust and to a consistent 1\/4 to 3\/8 inch (6 to 9 mm) size, which gives you more control over structure, drainage and aeration. Its deep red color makes a striking top dressing against green foliage.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75rem;\"\u003eWhy growers choose it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eScreened 1\/4 to 3\/8 inch (6 to 9 mm).\u003c\/strong\u003e Screened to remove excess dust and deliver a clearly stated horticultural grade, for a predictable, consistent size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood value.\u003c\/strong\u003e A 3 quart (3.3 L) bag fills about seven standard 4-inch pots. The resealable bag stands up, so it's easy to pour and store.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom mixes.\u003c\/strong\u003e Use with your potting mix or blend with other components for houseplants, aroids, succulents, cacti and bonsai. It adds mineral structure for drainage and airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecorative top dressing.\u003c\/strong\u003e The deep red color gives pots a clean, finished look, and a top layer helps hold moisture in the mix.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrainage layer.\u003c\/strong\u003e A porous layer for the base of terrariums and pots.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top:1.75rem;\"\u003eHow to use\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRinse before use to remove natural dust.\u003c\/li\u003e\n\u003cli\u003eFor top dressing, add a thin layer to the surface for a clean, finished look.\u003c\/li\u003e\n\u003cli\u003eFor drainage layers, add a layer at the base of terrariums and pots.\u003c\/li\u003e\n\u003cli\u003eFor custom mixes, blend it into your own mixes where you want extra structure, airflow and fast drainage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin-top:1.75rem;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial: 100% red lava rock\u003c\/li\u003e\n\u003cli\u003eParticle size: 6 to 9 mm (1\/4 to 3\/8 in), screened\u003c\/li\u003e\n\u003cli\u003eBag size: 3 dry quarts (3.3 L), filled by volume\u003c\/li\u003e\n\u003cli\u003eCoverage: about seven standard 4-inch pots (varies with pot shape and use)\u003c\/li\u003e\n\u003cli\u003ePackaging: resealable stand-up bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"vp-system-note\" style=\"margin:2rem 0;padding:1.25rem;background:#F5F9F5;border-left:3px solid #2E7D32;border-radius:4px;\"\u003e\n\u003ch3 style=\"margin:0 0 .5rem;color:#2E7D32;font-size:1.1rem;\"\u003eWhere it fits with Molly's mixes\u003c\/h3\u003e\n\u003cp style=\"margin:0;color:#444;line-height:1.55;\"\u003eMolly's potting mixes are ready to use and already blended for air, moisture and drainage, so you don't need to add anything to them. Molly's soil-free components are single materials for growers who want more ways to grow, propagate and customize. For a complete mix, see \u003ca href=\"\/products\/mollys-aroid-mix-premium-tropical-plant-soil-mix\"\u003eMolly's Aroid Mix\u003c\/a\u003e, \u003ca href=\"\/products\/mollys-succulent-mix-premium-gritty-soil-mix\"\u003eMolly's Succulent Mix\u003c\/a\u003e or \u003ca href=\"\/products\/mollys-orchid-mix\"\u003eMolly's Orchid Mix\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- VP-MC-REDLAVA-FAQ-2026-10-23 --\u003e\n\u003cdiv class=\"vp-faq\" style=\"margin:2.25rem 0;\"\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eWhat size is Molly's Red Lava Rock?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eIt's screened to 6 to 9 mm, which is 1\/4 to 3\/8 inch.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eDo I need to rinse it?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Rinse before use to remove natural dust.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eCan lava rock be used in a terrarium?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Use it as a base drainage layer or as a decorative top layer.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eDoes red lava rock help with drainage and aeration?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Added to potting soil or other potting media, its mineral structure creates air pockets that help water drain, let roots get air after watering and resist compaction over time.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eDoes red lava rock hold moisture?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eIts porous structure holds some moisture and releases it slowly to plants.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eIs it suitable for succulents and cacti?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Red lava rock is widely used with succulents and cacti. Molly's is 100% natural, with no fillers, additives or dyes.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eCan I use it outdoors?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Try it as a top dressing for an outdoor succulent bowl, or as a red mulch in your landscape.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eCan I reuse it?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eYes. Lava rock is durable. Rinse it and let it dry before you use it again.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eHow many pots does a bag fill?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eAbout seven standard 4-inch pots. Pot shape and how you use it change the coverage.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;margin:0 0 .6rem;\"\u003e\u003csummary style=\"font-weight:700;padding:14px 16px;cursor:pointer;list-style:none;font-size:16px;\"\u003eDo I need to add lava rock to Molly's mixes?\u003c\/summary\u003e\u003cdiv style=\"padding:0 16px 14px;line-height:1.6;color:#333;\"\u003eNo. Molly's Aroid, Succulent and Orchid mixes are complete and ready to use. Use red lava rock for mixes you make yourself, drainage layers in terrariums and pots, or as a top dressing.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\",\n \"@type\": \"FAQPage\",\n \"mainEntity\": [\n  {\n   \"@type\": \"Question\",\n   \"name\": \"What size is Molly's Red Lava Rock?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"It's screened to 6 to 9 mm, which is 1\/4 to 3\/8 inch.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Do I need to rinse it?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Rinse before use to remove natural dust.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Can lava rock be used in a terrarium?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Use it as a base drainage layer or as a decorative top layer.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Does red lava rock help with drainage and aeration?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Added to potting soil or other potting media, its mineral structure creates air pockets that help water drain, let roots get air after watering and resist compaction over time.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Does red lava rock hold moisture?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Its porous structure holds some moisture and releases it slowly to plants.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Is it suitable for succulents and cacti?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Red lava rock is widely used with succulents and cacti. Molly's is 100% natural, with no fillers, additives or dyes.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Can I use it outdoors?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Try it as a top dressing for an outdoor succulent bowl, or as a red mulch in your landscape.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Can I reuse it?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"Yes. Lava rock is durable. Rinse it and let it dry before you use it again.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"How many pots does a bag fill?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"About seven standard 4-inch pots. Pot shape and how you use it change the coverage.\"\n   }\n  },\n  {\n   \"@type\": \"Question\",\n   \"name\": \"Do I need to add lava rock to Molly's mixes?\",\n   \"acceptedAnswer\": {\n    \"@type\": \"Answer\",\n    \"text\": \"No. Molly's Aroid, Succulent and Orchid mixes are complete and ready to use. Use red lava rock for mixes you make yourself, drainage layers in terrariums and pots, or as a top dressing.\"\n   }\n  }\n ]\n}\n\u003c\/script\u003e\n\u003c!-- \/VP-MC-REDLAVA-FAQ-2026-10-23 --\u003e\n\u003cp style=\"font-size:0.9rem;color:#555;margin-top:1.5rem;\"\u003e\u003cstrong\u003eCare and handling:\u003c\/strong\u003e Keep out of reach of children and pets. Not for consumption. Avoid inhaling dust and use in a well-ventilated area. Store dry and reseal after use.\u003c\/p\u003e\n\u003cp class=\"vp-p65\" style=\"font-size:0.9rem;color:#333;margin:1.5rem 0 0;\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including crystalline silica, which is known to the State of California to cause cancer. For more information go to \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" rel=\"noopener\" target=\"_blank\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Veryplants","offers":[{"title":"3 Quart (3.3 L)","offer_id":68046794817687,"sku":"MC-REDLAVA-6-9MM-3DQ-US","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/4026\/6992\/files\/mollys-red-lava-rock-01-front.jpg?v=1792707740","url":"https:\/\/veryplants.com\/products\/mollys-red-lava-rock","provider":"VERYPLANTS US LLC","version":"1.0","type":"link"}