Article: Unless you receive enough rainfall for a storage system, using a hose to water your garden will be most space-effective. Check for a faucet or water line on the roof, and attach your hose.  If you can find neither, use a watering can. The most reliable watering method involves setting up an automatic irrigation system. Refer to your garden map as you decide where to place containers. The ideal pots will be lightweight and deep enough to accommodate your plants' roots. Choose wooden or plastic containers over heavier materials, like terracotta. Depending on your preference, you can raise your plants from seeds or transplant young plants from nurseries. Seedlings are usually stronger and pest-resistant, while seeds are much cheaper.  Seedlings will fare better than seeds in cooler or windier climates. If desired, you can also start the seeds inside and transplant them later as seedlings. Windbreakers will keep your plants from drying out or getting damaged in harsh weather. Trellises are the most common option for rooftop gardens because they have holes, as solid windbreaks will knock over easily. Build or buy a trellis, and place it where it will block the wind's direction. Decorate your trellis with crawling ivy, sweet peas, climbing roses, or morning glory.

What is a summary?
Connect a hose that leads up to your rooftop. Add containers for your plants. Place your seeds or seedlings in the containers. Install a trellis.