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What Do The Numbers / Letters Mean? 

  • Fertilizers are labeled with their relative content of N (nitrogen) - P (phosphorus) -  K (Potassium) 

  • Nitrogen helps with the growth rate.

  • Phosphorus helps with the establishment of roots and blooms.

  • Potassium helps with establishing drought and cold tolerances.


What is the Difference Between Time Release and Water Soluble?

  • Time release fertilizers (continuous release / slow release) look like small beads or candies.  They gradually release their nutrients by erosion every time you water. Think of it as a multi-vitamin for your plants.

  • Water soluble fertilizers come either as a liquid or granular concentrate that is mixed with water.  They are absorbed through the leaves and roots and provide an immediate boost to your plants nutrition.  Think of it as a heavy, nutritious meal for your plants.


Tips & Tricks

  • Use a water soluble fertilizer every 10 - 14 days for your outdoor plants. You may want to fertilize your hanging baskets once every 7 days, especially if the weather has been hot and you have been watering frequently.

  • A time release fertilizer is great, but you will also want to use a water soluble fertilizer.

  • If you use a potting mix that contains fertilizer, it is important to supplement with a water soluble fertilizer.

  • When fertilizing (with water soluble fertilizers) make sure you are giving your plants a good soaking.  If your soil is extremely dry, you may need to lightly water first, wait a bit, and come back to fertilize.

  • Choose an all purpose fertilizer such as Jack’s 20-20-20. 

  • Consistent fertilizing throughout the summer is essential to a beautiful garden

Fertilizer Help Guide

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