Dear all, Just to confirm Jane's remarks It is one of the most eficient way to avoid 'tunneling rodents'. Thee many species which prefer planting at a depth of 20-25cm (8-10") Tunneling occurs at the depth of 10-15cm (4-6") sometimes they cut the stem without harming the bulb. For technical reasons a commercial nursery cannot plant that deep, but in permanent garden situation deep planting is a good solution. According to my observations in the nursery this applies especially to Tulips (esp T.sylvestris), Narcissus, Moraea (esp M simulans), Leopoldia comosa, Odontoglossum, Leucocoryne, Crocus, Tropeaolum, Rhodophiala, Triteleia, Sternbergia. Planting on the surface (par example Cyclamen) also avoids this rodent damage. Kind greetings Lauw de Jager http://www.bulbargence.com/ South of France -----Original Message----- From: Jane McGary <janemcgary@earthlink.net> To: Pacific Bulb Society <pbs@lists.ibiblio.org> Date: Thu, 25 Jun 2009 13:53:03 -0700 It's remarkable how deep bulbs will "pull down," left to their own devices, even in stiff soil. Sometimes this allows them to avoid tunneling rodents as well as winter cold. I've noticed that themids (Triteleia, Brodiaea, etc.) have much more robust