As a rule, ornamental grasses are extremely low maintenance. That said,there are a few things that you need to be aware of before you purchase your ornamental grass:
1. You MUST water your grass throughout the first season. We cannot stress this enough. Water with a hose (not a sprinkler) every 3-4 days if you've purchased your grass in the spring; every other day if you've purchased your grass in the summer. Water deeply. Use common sense regarding rainfall and supplemental watering needs. After the first season, you will not need to water your grass again, unless it is an atypical drought year. We have never watered our grasses after their establishing year.
2. Planting. Our grasses are large, so please be sure you dig a roomy hole (ideally before you purchase your grass). When planting, water the hole prior to placing your grass. We recommend a product called Superthrive, which helps the roots establish faster and seems to ease transplant shock. It is a little pricey, but will last a long time and you can use it when planting any tree, shrub or perennial. Do not fertilize your grass. If you are growing other perennials in your soil, it is probably fertile enough. If you are creating a new bed, mix in compost and other soil amendments, if needed. Be judicious - if your grass is floppy, it very well could be a sign that your soil is too rich.
3. Cut back. You can cut back your grasses either in the fall or in late winter (March) before the new growth emerges. Tie up large grasses with twine or a bungee cord prior to cutting them to make less of a mess. Please remember, gloves and long sleeves when dealing with Miscanthus - those blades can give you a nasty cut and rash. We recommend Foxgloves brand gauntlets or the Foxgloves Elle style gloves - you can buy themhere.