Gravas y cantos rodados decorativos: guía de colores y usos
Respuesta rápida: la grava y el canto rodado decorativo se eligen por tres criterios: color (para combinar con la fachada o las plantas), tamaño del grano (más fino para macetas y terrarios, más grueso para senderos y zonas de paso) y origen del material (mármol, caliza, granito o reciclado). Para jardines de bajo mantenimiento, cualquier grava sirve como cubresuelos; para acuarios y terrarios hay referencias específicas lavadas y sin aristas.
Guía rápida por color y uso
Cuánta grava necesitas
Como referencia general, para una capa decorativa de unos 5 cm de grosor necesitas aproximadamente 50 kg de grava por cada metro cuadrado. Para senderos con más tránsito, sube el grosor a 7-8 cm y recalcula la cantidad proporcionalmente.
Combina con el resto del jardín
Delimita las zonas de grava con bordillos de hormigón o combina con losas de hormigón para crear caminos transitables.
Preguntas frecuentes
¿La grava decorativa evita que salgan malas hierbas?
Reduce su crecimiento al bloquear la luz, pero para un control más eficaz se recomienda colocar una malla antihierba bajo la capa de grava antes de extenderla.
¿Puedo mezclar colores de grava en el mismo jardín?
Sí, es un recurso decorativo habitual para marcar zonas distintas (por ejemplo, un color para el camino y otro para los parterres), siempre que los tamaños de grano sean similares.
¿Qué grava es apta para acuarios?
Solo la grava específicamente lavada y sin aristas cortantes, pensada para no dañar a los peces ni alterar el pH del agua; no se debe usar grava decorativa de jardín en un acuario.
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