Growing herbs in your kitchen window is rewarding and fun, and sage is a good herb to start with. Sage is a culinary herb that blends well with parsley, rosemary and thyme. Fresh sage leaves are much stronger than the dried stuff we all have in our spice cabinets and will make every dish you prepare with it so much tastier.
Planting and Growing Sage for the Indoors
Place a coffee filter in the bottom of the pots. This will keep the soil from washing out too quickly. If you are planting seeds, fill the pot up to the top with soil but do not pack it down. Place the seeds on top of the soil about 1 inch apart. Place more dirt on top to cover the seeds with approximately 1/2 inch of soil and press down evenly so the seeds have good contact with the soil. Water with warm water and cover with plastic wrap. Place these pots on top of your refrigerator where they will be warm and out of drafts. Check for seedlings after one week. You might need to add more water in the bottom saucer of the pot if the soil seems dry. Check every few days until seedlings have evolved. Remove the plastic wrap and place the pots in a sunny area.
If you prefer to buy seedlings and plant them, tuck seedlings in a pot lined with a coffee filter and filled with dirt, leaving enough room for the root of the plant. Pack soil around the sides of the plant so it has no gaps next to the side of the pot. Water with lukewarm water and set the pot in a sunny area. You should give the seedlings water only when the soil is dry.
Bringing a plant in from the outside is easy: Dig the plant up and shake the dirt from its roots. Place it in a large plant pot lined with a coffee filter and fill the pot with potting soil. Tamp the dirt around it and water it.
Trimming back a sage plant does two things: It gives you leaves to use for cooking and keeps the plant bushy. You can prune it back at any time once the leaves are of "eating" size (more than an inch long). If the plant starts looking yellow or light green, it either needs a light feeding with a garden fertilizer or a bigger pot.
You can plant your sage plants outside in the spring and bring them back inside in the fall. Sage are hardy perennials, and you might be lucky enough to harvest leaves even after frost has killed everything else in late fall.