HOW TO USE GROWING BAGS
Decide where you want to grow your plants. Place the bags in an area that receives enough sunlight for the vegetables you wish to grow.
Keep the bags well-watered. The plastic often heats up the coco peat mix, so keeping the soil moist is very important.
Prop up tall plants with sticks.But be careful not to tear the bags at the bottom.
HOW TO PREPARE AND PLANT
You must loosen the contents of the bag by shaking it properly.
Shape the bag into a low mound, making sure compost is evenly spread.
Pierce the base of the bag for drainage and cut out the premarked planting squares.
Scoop out a little peat-compost mix from each square, leaving a hole that is big enough to place the roots. Put one sapling in each hole and refill it with compost around it.
The root should remain just below the top surface of the soil.
WHAT TO GROW
Shallow-rooted plants grow best in bags. Good choices would be tomatoes, capsicum, brinjals, cucumbers, beans, lettuce, herbs and flowers.
Plant two to three saplings in each bag.
Alternatively , cut a long panel at the top of the bag and sow salads in rows across the width of the bag.
Lettuce and basil can be sown from spring to late summer.
When top-heavy crops are about 8 inches tall, push a cane into the bag next to each plant. Tie the plant to the cane. This will prevent the plants from toppling over.
Keep the compost moist. When flowers appear, feed plants such as brinjals, tomatoes, cucumbers and peppers with high potash fertiliser. This will ensure healthy fruits. When crops die, split the bag open and recycle the compost as a soil conditioner in the garden.
Most vegetables grown in gardens require full sunlight but leafy veggies such as lettuce enjoy partial shade.
Tomatoes will not set fruit properly if not grown in full sun.
Two inches from the top of the plastic bag should be kept free so that soil doesn't spill out over the edges.
Water the soil till it seeps from the drainage holes at the bottom of the bag -indicating that the soil is evenly moist, but not muddy .
Source : https://timesofindia.indiatimes.com/city/kolkata/-heres-all-you-need-to-know-about-bag-gardening/articleshow/60155331.cms