Temperatures Spiraea x billardiicontinental : We suggest to place the Spiraea x billardii where it is exposed to direct sunlight. alpine : Place the Spiraea x billardii in a location exposed to direct sunlight. mediterranean : These plants need to be exposed to direct sunlight; in summer they can be exposed to a slight shadow without any problem. Feed Spiraea x billardii : Fertilize our shrubs using an organic fertilizer or a slow-release granular fertilizer, intervening at the end of winter and at the end of summer. Use potassium-rich fertilizers for our flowering plants, nitrogen-rich fertilizer for green plants. Irrigation Spiraea x billardiicontinental : Give very regular waterings; all year long the soil shall be kept humid, however avoiding dangerous stagnations. Increase waterings in summer and decrease them when autumn starts. alpine : We suggest frequent and generous waterings, so that the soil remains mostly humid all year long. It is possible to decrease waterings in winter. mediterranean : It is advisable to give regular waterings, specially during spring and summer; before giving again water make sure the soil is dry. Adversity Spiraea x billardii : Apply a precautionary treatment against fungal diseases at the end of winter; later on treatments will be applied only in case parasites are on the plant, trying to use specific products and not broad-spectrum ones. In any case avoid treatments during bloom for not injuring the pollinating insects. |
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