"We take 600 periodicals for the latest information," said Ms. Jahn, a horticulturist and garden historian.

Ms. McLean is a garden historian who has monitored the accuracy of the Scottish exhibits right down to particular species.

"Pompeii was a hot, crowded city, where the people gardened in courtyards," said Susan Tamulevich, a garden historian.

The show is assembled by the garden historian Susan Tamulevich and Patrick Chassé, a landscape architect.

Coats, who died in 1978, was a British garden historian with a talent for weaving erudite, mesmerizing tales with pure, dirt-gardening know-how.

Francisco Páez de la Cadena (Madrid, 1951) is a Spanish garden historian.

Tips compiled by the garden historian, Linden Groves.

Mr. Adams, whose age shall remain ageless, is a Renaissance man - farmer, lawyer, curator, Jefferson scholar and, most profoundly now, garden historian.

Eleanour Sophy Sinclair Rohde (1881-1950) was a British gardener, garden historian, and horticultural writer.

Ms. Griswold, the garden historian, first rowed up the inlet 14 years ago and saw the manor house.