QuestionsSoilsGarden SkillsPlant nutrientsEco Wood Briquette ash? 0 Vote Up Vote Down Maria C O\’Brien asked 8 years ago Can you use Wood Briquette ash in the border? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 5 years ago Any kind of wood ash is beneficial, containing useful amounts of potash nutrient. Use it as a light scatter around flowering or fruiting plants as potash promotes these.