Exposure Pinus coultericontinental : They prefer locations where they can receive direct sunlight for at least few hours. alpine : It is advisable to place these plants in a very bright location, exposed to direct sunlight. mediterranean : Place these plants in a very bright location, possibly exposed to direct sunlight. Fertilization Pinus coulteri : Usually trees do not need any fertilizer, since their roots are very extended in the soil and therefore they can move to search mineral salts necessary to the plant. Young trees shall be buried after having mixed a ripe organic fertilizer with the soil, or after having added a slow-release granular fertilizer. It can be necessary, during the years, to give some fertilizings, to be given by burying the selected fertilizer at the base of the plant at the end of winter. Watering Pinus coultericontinental : These plants prefer dry soils, therefore avoid to water them too often; it can be necessary to intervene more often during summer, in very hot and dry periods. alpine : We suggest occasional waterings; intervene occasionally from April to September, when the soil is completely dry. During the rest of the year avoid watering, or slightly dampen the soil only when it has been very dry for few days, in case the plant is starting to fade. mediterranean : Waterings will be rather poor and less frequent, remember to increase waterings during the hottest periods of the year. The soil can remain dry also for few days before the plant needs new waterings. Treatments Pinus coulteri : Normally we intervene in case parasites are on the plant; in any case a precautionary treatment against fungal diseases in spring can be useful, applying Bordeaux mixture on the buds before they grow too much. |