If the weather is good, a packed lunch to eat on the lawn is well worth bringing.
Go for opening time at 10 a.m. to avoid crowds and break for lunch halfway through your visit.
Opens at 10 a.m. year-round. Closing times vary slightly depending on the season.
Access to the gardens is free, but the £6.50 entry fee (for those over 15) to the Glasshouses is worth every penny.