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The marijuana plant’s resin can be difficult to wash off.  Wearing disposable rubber gloves will protect your hands from its sticky buds. Marijuana plants are fragile and can be sensitive to rough treatment.  Trimming your plant must be done carefully.  Sharp sewing shears or a sharp kitchen knife should be adequate to trim your plant.  Fiskars shears are a good option for trimming. Gardening shears are also commonly used to trim marijuana.  Large fan leaves can be plucked with your fingers, as well as clipped with scissors or shears. You should not simply discard the leaves you trimmed.  They can be used to make marijuana foodstuffs or hashish.  So before trimming your marijuana plants, set three cookie sheets or other wide containers near the plants you’ll be trimming.  On one sheet, set untrimmed buds.  On the second sheet, set newly trimmed buds.  And on the last sheet, set the leaves and other plant matter you trim from the plant. The top of your marijuana plant should have a cluster of white hairs sticking out the top of it.  These are the plant’s pistils, or reproductive organs.  As the plant ages, these pistils will change from white to brown.  When about 70% of the pistils have darkened to a reddish brown, your plant is ready for harvest. Most people trim their marijuana plants before drying them.  This is known as a “wet trim.”  A wet trim makes it easier to separate leaves from buds, and produces better-looking buds.  However, some people trim the plants after the buds of the plant have dried.  This is known as a “dry trim.”  This is the preferred method of trimming in a low-humidity environment, since the leaves will slow the drying process and you want the buds to dry slowly.
Wear gloves. Use the right tools. Arrange a system to separate your trimmings. Harvest your plant at the appropriate time. Decide whether to wet trim or dry trim.