{"product_id":"black-walnut-juglans-nigra","title":"Black Walnut (juglans nigra)","description":"\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNorth American introduction (1629), grown for highly prized dark timber (furniture, gunstocks) and potential agroforestry value.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProduces edible nuts with rich, earthy flavour (though thick-shelled and harder to extract than common walnut).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAttractive large pinnate leaves turning yellow in autumn; fragrant foliage; broad crown for shade.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFast-growing on good sites; long-lived; potential high-value crop\/tree in warmer climates.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCaution: roots\/leaves\/nuts exude juglone, high \u003ca href=\"https:\/\/youtu.be\/iywaBOMvYLI?si=2IWVjYmhnsPBm_4O\" target=\"_blank\"\u003eToxicity\u003c\/a\u003e to many plants (e.g., tomatoes, apples, potatoes) – limits underplanting and companion gardening.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003ePlanting Guide\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBest time: Bare-root November–March (dormant season); container-grown autumn or spring.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLocation: Full sun; deep, fertile, moist but well-drained soil (tolerates most except waterlogged or very acid); sheltered, frost-free site in warmer southern\/lowland UK – needs ample space (matures 20–30m+ tall\/wide, unsuitable for small gardens).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePreparation: Dig large hole twice root ball width; add organic matter to poor soils; keep area weed-free initially.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlanting: Set at original depth (check trunk soil mark); stake young trees; firm in and water well, mulch base to control weeds and preserve water (keep clear of trunk).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAftercare: Water regularly first few years in dry spells; minimal pruning (winter for form); difficult to establish in areas prone  to late spring frosts; low-maintenance once established.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cumbria Tree Growers Ltd","offers":[{"title":"40-60cm","offer_id":58457664225624,"sku":null,"price":3.36,"currency_code":"GBP","in_stock":true},{"title":"60-90cm","offer_id":58457664258392,"sku":null,"price":4.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/4879\/4968\/files\/IMG_2204.jpg?v=1789920612","url":"https:\/\/www.treegrowers.co.uk\/products\/black-walnut-juglans-nigra","provider":"Cumbria Tree Growers Ltd","version":"1.0","type":"link"}