{"product_id":"black-flag-horticulture-alpine-hardy-succulent-grit-mix","title":"Alpine \u0026 Hardy Succulent Grit Mix by Black Flag Horticulture","description":"\u003cp\u003e\u003cstrong\u003e⚪ Type: Unfertilised \/ Blank Canvas\u003c\/strong\u003e\u003cbr\u003eNo nutrients have been added at all. This gives you total control over feeding from day one, with zero risk of the substrate fighting your own nutrient plan. The tradeoff: you must start feeding immediately — there's no built-in safety net if you forget or under-feed early on. For alpine plants specifically, this barely matters: they evolved on mountainsides with almost nothing to eat, and they'd rather stay that way.\u003c\/p\u003e\n\u003ch3\u003eBlack Flag Horticulture™ Alpine \u0026amp; Hardy Succulent Grit Mix\u003c\/h3\u003e\n\u003cp\u003eOur Arid Desert Cactus Mix was built to solve chronic underwatering. This one solves the opposite problem, and it's a more dangerous one. A desert cactus that gets slightly too much water sulks for a few weeks. An alpine plant that sits in water through a British winter can be dead within days — the water sits around the crown, freezes overnight, and physically ruptures the plant's cells from the inside. That's not a slow decline. That's a plant that was fine on Tuesday and black mush by Thursday.\u003c\/p\u003e\n\u003cp\u003eWhich is why this mix is built so differently from the desert one, despite sharing two of the same three ingredients.\u003c\/p\u003e\n\u003ch3\u003eWhat's Actually In The Bag\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e70% Volcanic Clay Grit (4-8mm)\u003c\/strong\u003e — the overwhelming majority of the mix, and deliberately so. Traditional alpine and trough compost recipes push mineral content this high for exactly one reason: any organic matter that holds water is a genuine liability once frost arrives, not just a minor inconvenience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15% Coco Coir\u003c\/strong\u003e — just enough organic matter to give roots something to actually grip and establish in. Any more than this and the mix starts holding the kind of moisture that's fine in July and lethal in January.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15% Perlite\u003c\/strong\u003e — extra insurance on drainage and aeration, working alongside the grit rather than duplicating it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThat's a genuine 85% mineral mix. If that sounds excessive, it's worth knowing that serious alpine growers often go even further — some grow Sempervivum in almost pure grit with no organic component at all. We kept a small amount of coco in ours because a little root-gripping structure makes potting and establishing new plants considerably easier, without meaningfully compromising the drainage that's the entire point.\u003c\/p\u003e\n\u003ch3\u003eBuilt For Outdoor Survival, Not Indoor Convenience\u003c\/h3\u003e\n\u003cp\u003eThis isn't a mix for a windowsill. It's for troughs, rockeries, and outdoor containers left to face actual weather — rain, frost, freeze-thaw cycles, months where nobody's checking on it. The same aggressive drainage that would be overkill for a houseplant is exactly what gets a Sempervivum through a genuinely wet British winter without rotting from the crown down.\u003c\/p\u003e\n\u003ch3\u003eGood For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSempervivum (Houseleeks) — the classic rockery and trough alpine, and about as unforgiving of wet feet as a plant gets\u003c\/li\u003e\n\u003cli\u003eHardy Sedum species grown outdoors year-round\u003c\/li\u003e\n\u003cli\u003eRockery and trough displays generally, where the mix needs to survive unattended through winter\u003c\/li\u003e\n\u003cli\u003eAny outdoor container succulent where drainage matters more than feeding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposition:\u003c\/strong\u003e 70% Volcanic Clay Grit (4-8mm) \/ 15% Coco Coir \/ 15% Perlite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFertiliser:\u003c\/strong\u003e None added — genuinely unfertilised\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest Suited For:\u003c\/strong\u003e Outdoor alpine troughs, rockeries, and hardy succulents left to weather a British winter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Black Flag Horticulture","offers":[{"title":"Sample","offer_id":54786849407322,"sku":"BFH-ALPINE-SMP","price":2.99,"currency_code":"GBP","in_stock":true},{"title":"1 Litre","offer_id":54786849440090,"sku":"BFH-ALPINE-1L","price":5.49,"currency_code":"GBP","in_stock":true},{"title":"2 Litres","offer_id":54786849472858,"sku":"BFH-ALPINE-2L","price":7.99,"currency_code":"GBP","in_stock":true},{"title":"5 Litres","offer_id":54786849505626,"sku":"BFH-ALPINE-5L","price":14.99,"currency_code":"GBP","in_stock":true},{"title":"10 Litres","offer_id":54786849538394,"sku":"BFH-ALPINE-10L","price":24.99,"currency_code":"GBP","in_stock":true},{"title":"20 Litres","offer_id":54786849571162,"sku":"BFH-ALPINE-20L","price":41.99,"currency_code":"GBP","in_stock":true},{"title":"50 Litres","offer_id":54786849603930,"sku":"BFH-ALPINE-50L","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/9861\/4106\/files\/rn-image_picker_lib_temp_9c1ab900-c4e6-4790-8439-b376da79a683.png?v=1789411459","url":"https:\/\/blackflaghorticulture.com\/sq\/products\/black-flag-horticulture-alpine-hardy-succulent-grit-mix","provider":"Black Flag Horticulture","version":"1.0","type":"link"}