Promotes better growth for all types of houseplants13-4-5 NPK Fertilizer AnalysisApply fertilizer every 6-8 weeks Jobe’s Houseplant Spikes are specially formulated to give all varieties of houseplants the nutrients they need. These pre-measured spikes provide nourishment to the plant’s roots without any mixing or runoff.No mixing or measuringNo chemical runoffIdeal for houseplantsContinuous, time release fertilizerWill not burn plants when applied as directedFeeds for 8 weeks