{"product_id":"greda-volcanica","title":"Volcanic rock","description":"\u003cp\u003eImproving pot drainage in a Caribbean climate, where frequent watering and heat lead to root rot in compacted substrates, while also decorating the garden with mineral cover that controls weeds and protects the root zone from extreme heat, requires volcanic rock with calibrated granulometry and stable mineralogy. This volcanic rock—also known as \u003cstrong\u003evolcanic scoria\u003c\/strong\u003e, lava rock, or pozzolana—is marketed by Gardese in an extra-coarse format (10-20 mm) in 25 kg bags, in red and black varieties, designed for home and professional gardening, hydroponics, xeriscaping with cacti and succulents, and decorative landscaping applications.\u003c\/p\u003e\n\n\u003ch3\u003eMain benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced drainage and water retention:\u003c\/strong\u003e the porous structure absorbs water and gradually releases it into the substrate, reducing watering frequency and preventing waterlogging, a critical condition for cacti, succulents, orchids, and Mediterranean plants in the humid Caribbean climate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal insulation in the root zone:\u003c\/strong\u003e the low thermal conductivity of the material protects roots from temperature peaks in the Caribbean summer when pots heat up in the sun, a condition that stresses sensitive crops.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight for large pots and balconies:\u003c\/strong\u003e being low-density volcanic rock, it weighs significantly less than conventional sand or gravel, a decisive advantage in elevated gardening where structural load matters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSterile and durable mineral:\u003c\/strong\u003e it does not decompose, does not harbor insects or pests, does not attract termites, does not compete with the plant for nutrients, and does not need repositioning season after season like wood barks or organic mulch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDecorative function with two colors:\u003c\/strong\u003e the red format adds warmth and contrast against garden green; black defines modern and minimalist lines. Both maintain their color for years without fading.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical applications and uses\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDecorative cover (mineral mulch) over garden soil, flowerbeds, and outdoor pots with weed control.\u003c\/li\u003e\n  \u003cli\u003eDrainage layer at the bottom of pots and planters for controlled water flow.\u003c\/li\u003e\n  \u003cli\u003eImprovement of compacted substrates by providing aeration and preventing root asphyxiation.\u003c\/li\u003e\n  \u003cli\u003eSubstrate for xeriscaping and collections of cacti, succulents, and low-water plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eQuality and durability\u003c\/h3\u003e\n\u003cp\u003eAn economical volcanic rock fails in two ways: its mineralogy includes high proportions of powdery fines (which reduces useful volume and leaves sediment after the first watering) and its granulometry is irregular with stones of very disparate sizes (which produces uneven drainage and an irregular aesthetic appearance). Gardese works with calibrated volcanic rock in a uniform extra-coarse format, which distinguishes professional gardening volcanic rock from a generic bag mixed with fines.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color: #F3F6F3; padding: clamp(14px, 4vw, 18px); margin-top: 20px; font-size: 0.9em; color: #555555; border-radius: 8px;\"\u003e\n  \u003cstrong style=\"color: #006902;\"\u003eAlso known as:\u003c\/strong\u003e\n  \u003cstrong\u003eTechnical:\u003c\/strong\u003e volcanic rock, volcanic scoria, lapilli, natural pozzolana, porous basalt, volcanic substrate.\n  \u003cstrong\u003eIn DR and Caribbean:\u003c\/strong\u003e greda volcánica, piedra volcánica, piedra roja, picadura volcánica.\n  \u003cstrong\u003eIn other countries:\u003c\/strong\u003e lava rock (USA), volcanic rock (USA), tezontle (MX), picón (ES, Canarias), gravilla volcánica (LATAM), cascajo rojo (LATAM).\n\u003c\/div\u003e","brand":"GARDESE","offers":[{"title":"Extra thick [10 - 20 mm (0.4 - 0.8 in)] \/ 25 kg (55 lb) bag \/ Red","offer_id":52254371676488,"sku":"573819","price":5100.0,"currency_code":"DOP","in_stock":false},{"title":"Extra thick [10 - 20 mm (0.4 - 0.8 in)] \/ 25 kg (55 lb) bag \/ Black","offer_id":52598546563400,"sku":"321451","price":5100.0,"currency_code":"DOP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0916\/9751\/2776\/files\/greda-volcanica-roja-decoracion-jardines-santiago-rd.png?v=1771869244","url":"https:\/\/dodom.com\/en\/products\/volcanic-rock","provider":"Dodom","version":"1.0","type":"link"}