Plant Data
Sheet
Species
Tweedy's Lewisia,
Lewisia tweedyi
Range
L.
Tweedyi is endemic to the
Climate,
elevation
Well
drained mountain ecosystems with full sun.
Local
occurrence
Habitat
preferences
L.
Tweedyi grows primarily in dry rocky banks and talus slopes with full sun where
ponderosa pine is found.
Plant
strategy type/successional stage
A perennial evergreen plant which specializes in living on
dry rocky areas so it encounters little competition.
Associated
species
L.
Tweedyi Is commonly found with
ponderosa pine. It is also related to a Lewisia found in more moist sandy soils
near the
May be
collected as:
Can be collected as seeds or cuttings in mid June. (Gnps.org)
Collection
restrictions or guidelines
The
seeds have a sweet scent and come from a 10-20cm flower which is pink to yellow
in color. (cwnp.org) Plants do not go to seed very well outside of the wild, so
they are often propagated by stem cuttings which should be planted in early
spring. (paghat.com)
Seed
germination (needs dormancy breaking?)
Seeds
should be stratified for the winter, or sewn during fall in a place with cold
winters as to break dormancy.
Seed life
(can be stored, short shelf-life, long shelf-life)
It
is best to use the seeds the season they are collected. However, if needed they
should be cleaned of the sweet skin, which may contain a germination inhibitor,
dried in a paper bag and stored in a cool place.
Recommended
seed storage conditions
In a paper bag in a cool place.
Propagation
recommendations (plant seeds, vegetative parts, cuttings, etc.)
Seeds
should be planted in early spring after sufficient cold stratification.
(Susansgardenpatch.com)Cuttings should also be planted at this time.
Soil or
medium requirements (inoculum necessary?)
“Well
drained gritty soil in full sun” (Susansgardenpatch.com).
Installation
form (form, potential for successful outcomes, cost)
After
the plant has had sufficient time to establish it can be transplanted to the
intended site.
Recommended
planting density
Care
requirements after installed (water weekly, water once etc.)
As
L. Tweedyi is used to excessively
well drained soils, watering should be done in small amounts. The pots can be
kept on a layer of saturated sand so only the lower roots can access the water.
Normal rate
of growth or spread; lifespan
Grows
slowly and can life for many years, though not much is written about the
lifespan. Populations spread very slowly as they rely on ants for seed
distribution.
Sources
cited
Pojar, Jim and Andrew MacKinnon.
1994. Plants of the
http://www.gnps.org Georgia Native Plant
Society
http://www.cwnp.org/photopgs/ldoc/letweedyi.html
http://www.susansgardenpatch.com/rock15.htm Susan’s Garden Patch
http://www.paghat.com/lewisia7.html The
http://www.em.ca/garden/per_lewisia_tweedyi1.html Perennial Gardening on the Prairies
Data
compiled by (student name and date)