6 responses to “Trillium ovatum ‘Tillicum’”

  1. John Gyer

    Double-flowered trillium have a long history. The history began with the 1864 record of a double-flowered Trillium grandiflorum taken from the wild into a garden. Since then doubles have been recorded in T.erectum, T.ovatum and some sessile trilliums. A problematic record of a double T.vasyii exists, but the plant is no longer known to be in cultivation.
    In addition to doubling caused by “normal” genetic mutations, it can be associated with a diseased state – both viral and mycoplasmal.
    A historical study and search for the wild origin of cultivated forms is available in: ROCK GARDEN QUARTERLY, vol. 59#3, Summer 2001 – Double Trillium: History of an Elusive Flower by John and Janet Gyer. The work was also published in THE GREEN SCENE, the magazine of the Pennsylvania Horticultural Society, November 1997. Three named forms of T.ovatum were found during this historical research ‘Edith’, ‘Barbara Walch’, and ‘Kemoor’.

  2. Daniel Mosquin

    Ah, I should have mentioned double-flowered western trilliums to be a bit more specific when stating how uncommon they are re: cultivars.
    For those locals interested, a double-flowered trillium, Trillium ovatum ‘Plenum’ will be available at next week’s Collectors’ Plant Auction.

  3. Patricia Gooch

    Hi, I was wondering, do trilliums only grow under douglas fir? I read this online, and am wondering if anyone has had success growing them without douglas fir. The botanical name is Trillium ovatum. Thanks!

  4. Tom Wheeler

    Yes, Trillium ovatum (T. o. will grow without Douglas firs present. At home, we have a trillium I rescued as a seedling from among grasses on our lot. It is growing beside a Viburnum x bodnantense ‘Dawn’ and in front is a Daphne laureolum (an invasive companion for Vinca major as seen on the BPoD)The native tree cover on our lot was western red cedar(there are cedar roots where our trillium grows) & bigleaf maple. I have seen it growing in a forested park setting, among red alders–although one can make a case that this habitat was once Douglas fir forest. A neighbour has many western trillium planted on the north-side of his house between the house foundation & the sidewalk. A preferred requirement is part shade. Trillium tolerates drought well once established. At UBCBG, we have planted T.o. with native ferns & Mahonia nervosa (dull Oregon grape)–nasty common name!

  5. Tom Wheeler

    Re. Double-flowered Trillium by John: the accepted name for T.o.’Kemoor’ is T.o. ‘Kenmore’. No time to do further research. Thanks for the memory jog! I haven’t seen ‘Kenmore’ & ‘Tillicum’ side by side in the Garden in 30 years!

  6. Tom Wheeler

    Patricia Gooch et al check out Darlene O’Neill’s 1995 UBC MSc (Plant Science) thesis “Taxonomic Study of Trillium ovatum forma hibbersonii” at https://circle.ubc.ca/bitstream/2429/4187/1/ubc_1996-0076.pdf because Darlene lists forest zones (p. 9 “Distribution and Ecology) and “Collection locales” Table 1, p.10 where Trillium ovatum (straight species) grows.
    Forest zones: Coastal Western Hemlock, Coastal Douglas fir, Interior cedar-hemlock, Interior Douglas fir, near streams in Ponderosa pine & lodgepole pine; also in (Sequoia sempervirens) Coast redwood forest communities. Found as far east as south-eastern Waterton Lakes Park, Alberta. Thanks, Darlene! Darlene was mentored in her thesis subject by Gerald B. Straley (deceased), a former Curator of Collections for UBC Botanical Garden. Anyone seen Darlene recently? Say Hi!

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