When Margaret and Casey see their father become weedy while working on his botany experiments, they worry that his plant-testing may not be entirely harmless.
- ISBN10 0590553062
- ISBN13 9780590553063
- Publish Date 12 November 1993 (first published 1 January 1992)
- Publish Status Out of Print
- Out of Print 26 February 2010
- Publish Country GB
- Publisher Scholastic
- Imprint Scholastic Hippo
- Format Paperback (B-Format (198x129 mm))
- Pages 128
- Language Spanish