REMOVE

1. Greenhouses
2. Conservatories
3. Glass -- In architecture

WHAT

1. Gardens -- England -- Lon … (6)
2. Kew Gardens (London) (6)

WHERE

1. ENGLAND, UK (9)
2. London (6)
3. Glasgow (5)
4. SCOTLAND, UK (5)
5. Chatsworth House, Derbysh … (3)

WHO

1. BURTON, Decimus (5)
2. KIBBLE, John (5)
3. TURNER, Richard (5)
4. PAXTON, Joseph (3)
5. CHAMBERS, William (1)

WHEN

1. 1872 (5)
2. 1987 (5)
3. 1761 (1)
4. 1848 (1)