1 Overwatering Plants
Overwatering plants can seriously damage the plant and believe it or not can cause the plant to drown. Each plant will have its own guidelines so ensure you read these carefully. If you ever feel unsure, place your finger inside the soil and if its damp then the plant is ok.
2 Grow To Your Environment
If you have a small area such as a balcony / window sill then ensure you choose the correct plant that suites the space. A tomato plant would not be suitable for a window sill as it will either become root bound or overgrow its direct area.
3 Enjoy Growing Your Plants
Don't try to grow everything at once, start with a select few plants (Generally Hardyer Plants) to gain experience. Once mastered, expand your horizons to different plant variaties. This will take you from a novice gardener to an intermediate in no time.
4 Tricks To A Bushier Plant
A shorter bushier plant is sometimes the desired effect needed, the key to this is called "Topping", this is a process where you remove the top nodes off the plant to stump growth in the height. By doing so all the plants energy will be transfered into the side of the plant to produce a wider bushier plant.
5 Deadheading Flowers
This technique tricks the plant into thinking it needs to grow more flowers, by removing any old leafs / internodes again it forces the plant to push energy there to grow new vibrant nodes. If the old leafs are left the plant can utilse its energy into producing unwanted seeds.