Thanks for writing. Hollies do best in moist, well-drained soil that's rich in organic matter. So if you have tough soil, it's helpful to spread an inch or two of compost over the ground around your plants every couple of years. Most hollies prefer acidic soil --- so test your soil to find its pH. If it's over 7, then you'll want to use a soil acidifer, such as sulfur, to lower the pH.
Also: Since most hollies don't like drought, be sure to keep them well-watered --- especially in the fall.
In your area, it's also a very good idea to protect them from cold, dry winter winds by either growing them in a sheltered spot or protecting them with burlap or a similar material.
Good luck. I hope this helps!
---Justin, Senior Garden Editor, BHG.com "