Fill the bottom half of a planter with cactus growing mix.
Position the haworthia attenuata in the planter at its previous depth. Finish filling the planter with growing mix and water until the soil feels lightly moist.
Place the planter in a location that receives bright sunlight and is protected from cold drafts.
Water when the top 1/2 inch of the growing mix dries out during spring and summer. Water only when the growing mix dries out completely during winter months.
Feed with water-soluble houseplant fertilizer once each month during the growing season. Apply the fertilizer at 1/4 the rate indicated on the package.
Break off damaged or dead stems at soil level.