A hand pruner is typically sufficient for this job. Plant seeds in slightly acidic and moist soil when temperature stables around 20c. Coffee Arabica Plants Plants Coffee Plant Indoor Plants Your coffee plant care routine can also include light fertilizing with a balanced fertilizer once every to two three months in the spring and summer. Coffee plant care outdoors . Make sure to keep the plant away from drafts, such as those produced from air conditioning. Leaves become yellowed and the plant will stay small if grown in an area with full sun. Ideally, the location should also be relatively shady and should provide ample shelter from cold or hot winds. Keep the soil of your coffee plant consistently moist, but not soggy. Keep the plant watered and the soil moist; Keep in mind that a happy coffee plant can grow up to 6 feet (2 m.) tall. A coffee plant can grow outdoors during summer months on the patio or in the garden. This is also something that should be done du...