
North American Temperate Sundews
These plants grow during
the warm summer months and will go dormant in the cold winter months, often not
spent in freezing temperatures. Most of these can be grown year-round without
observing slight ill effects, but you will get more robust plants and a specific
blooming time if you give them that time to rest. Most of them will just halt
new leaf growth.
- Growing Media:
- A mixture of one part
peat and one part sand works well.
-
- Temperatures:
- Several text say to grow them in the
summer at 70-95F, and winters 40-50F. I know a few of these can tolerate 105F
if provided with some filtered shade. Any exceptions are noted
below.
-
- Water & Humidity:
- This is also a varied
range. All plants need plenty of water and humidity during their respective
growing season. However, dormancy characteristics dictate how much water
they receive. See plant specifics below.
-
- Light:
- Grow in bright direct or
indirect light.
-
- Dormancy Requirements:
- If it gets just
slightly chilly, the plants stop growing. If severe, they will lose their
leaves.
-
- Asexual Reproduction:
- Take a leaf, place on moist
soil and give high humidity & light, with
temperature around 75F. I have increased chances when I do not remove
the leaf from the plant, but pin it to the soil. This is much easier
with larger varieties. With the smaller varieties, it's a little
tricky.
- A few of
these plants will reproduce by their roots also. If you see a new plantlet away
from the main one, you can dig it up carefully and sever the runner-root
and replant. I listed below which plants are susceptible to asexual
reproduction though these methods.
- Sexual Reproduction:
- I listed those plants that self-pollinate. Collect
seeds when the capsules dry, and store during the plants' normal dormant
months. In the spring, you can sprinkle the seeds on moist peat/sand, and
provide bright light and high humidity.
- Take
Specific
Cultural Information
Note that a "
"
denotes a picture available at the CP Database, just click on the camera and enter
"Drosera" and the species. Also check out the pictures available at
the Galleria
Carnivora, First floor.
- D. anglica
- A North-America
native sundew (also called the 'English Sundew') that is found in North
America, Japan, and parts of Europe. Produces up to nine white flowers
2.5" (7mm) is diameter; easily self-pollinates. Leaves are upright,
and can be up to 4" (petioles 3-7cm, blades 15-35mm) long and are paddle shaped.
This sundew dies back to
a bud in the winter only if weather gets severe -- otherwise grows
year-round. This plant an be propagated by leaf
cuttings.

© Dr. Lamoureax, courtesy of Gerald D. Carr
- D.
brevifolia
- North America native
rosette forming annual sundew that stays in cultivation by coming back
from the many seeds produced from the year before (self-pollinator), but
also can be propagated by leaf cuttings. Flowers can be rose-pink to
white, and are sometimes larger than the plant itself -- see the
picture at the link CP Database! Leaves only get 1/2" wide
(1cm).

© James Manhart
- D. capillaris
- Another small sundew forming a
small rosette with prostrate leaves. Similar to D. brevifolia, but
gets larger -- 1 1/2" (4cm) wide. Leaf blades are
longer than
they are wide, which helps in identification. Puts out rose-pink to
white flowers, which are self-pollinating; an easy grower. A
North-American Native that can be
propagated by leaf cuttings.
- © James Manhart
- D. filiformis
- A North American
plant. They form a small bud called a hibernaculum during dormancy
(which is required),
and are pretty tolerant of freezing temperatures. During the growing season, leaves come out in curled up, and slowly uncurl into
a leaf with the sticky tentacles from top to bottom. Leaves can grow up to
7" (18cm). Flowers can be purple, with up to 20 on
one flower stalk. Variety 'tracyi' is a more robust
plant with longer
leaves. However, the tentacles are green, not red. They can be propagated
by leaf cuttings.
- D. intermedia
- The 'Love Nest
Sundew' is native to North America, Europe, and Asia. Self pollinating
rosetted sundew with
white flowers. Leaves are somewhat upright averaging 2" (5cm), with
red dew on the end of a
round leaf (like a spoon). Dies back to a growing bud for dormancy. Can be
propagated by leaf cuttings. If you have any other information, please e-mail me!
- © Mike Baker
- D. linearis
- White blooming
sundew that easily self-pollinates. Will die back to an underground rhizome in the
winter. Grows best if summer temps are under 80F, and if isolated --
it doesn't grow well with other plants. Can be propagated by leaf
cuttings.
- © Michael Moore
-
-
- D. rotundifolia
- The 'Round Leaf
Sundew' is a North American sundew that dies back in the winter to an underground bud.
Also has been found growing in Europe and Asia. Leaves can reach up
to 3" (8cm). Displays up to 25 flowers on a single stalk, and
is self-pollinating. There are also three available varieties: var. rotundifolia,
var. comosa, var. graclis. It can be propagated by leaf cuttings.
If you have any
other information, please e-mail me!
- © Marco Bleeker, Thomas
Schöpke, James Manhart, and Mike Baker
-
Bibliography
Carnivorous
Plants of Australian,
Volume 1,2,3. Allen Lowrie
The Savage Garden, Peter D'Amato. 1998.
Carnivorous Plants of the World, James and Patricia Pietropaolo. 1986
Carnivorous Plant Database
Cambrian
Carnivores
Photo Contributors
Mike
Baker -Webpage- D. intermedia, D.
rotundifolia
Marco Bleeker
of Texas A&M Dept.
of Biology : D. rotundifolia
Gerald
D. Carr (Professor) & Dr. Lamoureax
(Photographer) - Webpage
- : D. anglica
Dr. Patrick L. Cooney -Webpage-
D. filiformis
James Manhart of Texas
A&M Dept. of Biology
: D. brevifolia, D. capillaris, D. rotundifolia
Michael Moore
-Webpage
- D. linearis
Thomas Schöpke of Texas
A&M Dept. of Biology
: D. rotundifolia
Last update 07/30/01
Since 2/22/2000