How to Grow Black & Blue Guaranitica From Seed


Black & blue guaranitica, sometimes called blue anise sage, giant blue sage and sapphire sage, is a perennial flowering plant in zones 8 to 10 and an annual flowering plant in colder growing regions. Black & blue guaranitica is a bushy shrub that has elongated, heart-shaped leaves, hairy stems and 1 1/2- to 2-inch-long purple, tubular-shaped flowers. Plant black & blue guaranitica from seed about six to eight weeks before spring.

Planting Black & Blue Guaranitica Seeds

Step 1

Pour a seed starting mix into planting packs. Use a spoon, a block of wood or other similar object to pack the seed starting mix down firmly until you are sure it's well-compressed.

Step 2

Place the planting packs into a plastic watering tray or other container that can hold about 1 1/2 to 2 inches of water. Pour water in the tray and allow the planting packs to soak up the water to thoroughly moisten the seed starting mix.

Step 3

Plant two or three black & blue guaranitica seeds per cell in the planting packs. Push the black & blue guaranitica seeds into the soil using a pair of tweezers or the blunt end of a pencil.

Step 4

Scoop up a little bit of the seed starting mix using a spoon and sprinkle approximately 1/4 of an inch of the seed starting mix over each of the black & blue guaranitica seeds.

Step 5

Transfer the tray of planting packs to a location in your home that can provide both warmth and light. Avoid direct sunshine, but provide six to 10 hours of light a day. Keep the soil in the planting packs leaning toward the moist side by adding water to the tray as needed. Providing a temperature of 70 to 75 degrees Fahrenheit should cause the black & blue guaranitica seeds to being germinating in approximately five to seven days.

Step 6

Transplant the black & blue guaranitica seedlings once they have reached a suitable size, about 2 to 3 inches in height.

Transplanting Black & Blue Guaranitica Seedlings

Step 1

Cultivate the planting area by first removing all weeds and their roots using a garden hoe.

Step 2

Dig planting holes that are spaced 18 to 24 inches apart from each other. Each hole needs to be about twice the width but about the same depth of each cell in the planting pack.

Step 3

Push up firmly from the base of a cell in a planting pack and extract a black & blue guaranitica seedling. Immediately place the seedling into one of the previously created planting holes.

Step 4

Scoop in garden soil around the black & blue guaranitica seedling to fill the hole with soil. Pack the soil down around the black & blue guaranitica seedling.

Step 5

Water each of the black & blue guaranitica seedlings using a starter solution such as 10-50-10. Mix 1 to 2 tbsp. of the solution into a gallon of water.

Things You'll Need

  • Black & blue guaranitica seeds
  • Planting packs
  • Seed starting mix
  • Watering tray
  • Tweezers
  • Garden hoe
  • Shovel or garden fork
  • Trowel
  • Starter solution
  • 1-gallon watering can


  • University of Wisconsin: Black and Blue Guaranitica
  • Salvia Guaranitica

Who Can Help

  • United States National Arboretum: Planting Zones
Keywords: salvia guaranitica, growing black and blue guaranitica from seed, germinating black and blue guaranitica seeds

About this Author

Katelyn Lynn is a certified holistic health practitioner who specializes in orthomolecular medicine and preventative modalities. She also has extensive experience in botany and horticulture. Lynn has been writing articles for various websites relating to health and wellness since 2007. She has been published on She is currently pursuing a Bachelor of Science in alternative medicine from Everglades University.