Bulb Day

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From Hymenocallis on Monday 3rd of August 2026 05:04:58 PM PDT
Hymenocallis caribaea (L.) Herb. is native to the Caribbean. Hymenocallis 'Tropical Giant' is found for sale under both this cultivar name and as Hymenocallis caribaea 'Tropical Giant'. Plant Delights describes it as "an old garden hybrid that inhabits abandoned home sites in the South and is one of the most reliable of the spider lilies." It has broad, glossy, stiff, dark green foliage and nicely proportioned flowers. Note how three of the six segments display more pronounced recurvature. The first four photos taken by Jay Yourch. The last photo was taken by Laura Grant.

Closeup of Hymenocallis 'Tropical Giant', Jay YourchCloseup of Hymenocallis 'Tropical Giant', Jay YourchCloseup of Hymenocallis 'Tropical Giant', Jay YourchHymenocallis 'Tropical Giant', Jay YourchHymenocallis caribaea 'Tropical Giant, Laura Grant

Hymenocallis caribaea 'Variegata' has attractive grayish green foliage with wide creamy white margins. Height range: 30-60 cm. Photos taken August 2007 by Jay Yourch.

Hymenocallis caribaea 'Variegata', Jay YourchHymenocallis caribaea 'Variegata', Jay YourchHymenocallis caribaea 'Variegata', Jay Yourch

From Hesperocallis on Sunday 2nd of August 2026 05:10:59 PM PDT
Hesperocallis undulata A.Gray, commonly known as the Desert Lily, has deep seated, tunicated bulbs, glaucous leaves and straight stout stems. Flowers are large, white with a silver or green midstripe and are fragrant, especially at night. Height range: to about 60 cm. Found in sandy flats of creosote brush desert scrub in some of the most arid regions of North America (deserts of southeastern California, Baja California and Sonora, Mexico, and southwesten Arizona), it flowers only after infrequent rains. Because this "Desert Lily" is very beautiful, bulb fanciers would love to bring it into horticulture. The seeds germinate easily in winter when grown in a well-drained mix. It is important to keep the seedlings in growth and not allow them to go dormant. Once the seedlings go dormant, getting them to break dormancy is a challenge. Even a few who have gotten them to come into growth again have not had success in getting plants to bloom. How to grow this plant is a recurring topic of the PBS list see here. If anyone ever gets it to bloom in cultivation and reports how they did it, we will add your techniques. Photos below were taken by Jamie Boothe in January in the scenic area between Salton Sea and Borrego Springs, probably less than 10 miles west of the Salton Sea.

Hesperocallis undulata, Jamie BootheHesperocallis undulata, Jamie BootheHesperocallis undulata, Jamie Boothe

The photos below were taken by Nhu Nguyen in late March 2010 in Anza-Borrego Desert State Park. Seasonal weather averages for this area is (night/day) 41-70 °F (5-21 °C) from December to February, 70-100 °F (21-37 °C) in June and 75-105 °F (24-45 °C) in July-September. Regardless of the time of year, the day-night fluctuation is usually around 30 degrees F (16 degrees C). These temperature fluctuations could be a clue to successfully growing this species.

Hesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu Nguyen
Hesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu NguyenHesperocallis undulata, Nhu Nguyen

The following photos were taken by John Longanecker April 1, 2005 near Baker in the Mojave Desert preserve and near 29 Palms, CA. Note the variation in the grey streak on the petals.

Hesperocallis undulata, John LonganeckerHesperocallis undulata, John LonganeckerHesperocallis undulata, John LonganeckerHesperocallis undulata, John Longanecker

From Narcissus Division Seven on Saturday 1st of August 2026 05:31:20 PM PDT
Narcissus 'Hillstar' is a reverse bicolor jonquilla hybrid (sister seedling to Narcissus 'Pipit') with a creamy white cup, yellow petals, and a white halo where the cup meets the petal bases. The flowers are all yellow when they first open, the white showing up as they age. First three photos taken March 2007 by Jay Yourch. Fourth photo taken by Travis Owen in April of 2015 shows a single scape with five flowers!

Narcissus 'Hillstar', Jay YourchNarcissus 'Hillstar', Jay YourchNarcissus 'Hillstar', Jay YourchNarcissus 'Hillstar', Travis Owen

From Cautleya on Friday 31st of July 2026 07:06:40 PM PDT
Cautleya spicata is a species that comes from the Himalaya, where it grows to three feet or so tall and bears red and orange flowers. Picture 1 shows the cultivar C. spicata 'Robusta' and is hardy in David Victor's garden down to temperatures of minus ten centigrade. Pictures 2 and 3 show the cultivar 'Crug Canary' grown by Martin Bohnet in container culture with dry, frost free hibernation.

Cautleya spicata 'Robusta', David VictorCautleya spicata 'Crug Canary', Martin BohnetCautleya spicata 'Crug Canary', Martin Bohnet

From Pancratium on Thursday 30th of July 2026 06:54:26 PM PDT
Pancratium foetidum Pomel is present from Morocco to Tunisia. It resembles a stockier version of Pancratium canariense with broader leaves and more rich umbels, and seeds also bigger. The specific name refers to the 'musky' scent of the flowers, but it's not a bad smell. Strictly summer dormant, it blooms in September in the Northern Hemisphere. Height: to about 40 cm. Photos below were taken by Angelo Porcelli in his yard, grown for many years and has withstood light frosts without damage.

Pancratium foetidum, Angelo PorcelliPancratium foetidum, Angelo Porcelli

From India on Wednesday 29th of July 2026 09:23:53 PM PDT
Dipcadi montanum (Dalzell) Baker is a bulbous geophyte belonging to the Asparagaceae family, notable for its erect habit and basal leaf clustering. It is distributed in the northern Western ghats and is typically found on rocky slopes and along forest fringes under subtropical conditions.

Dipcadi montanum, Saket Shrotri

From Bartholina on Tuesday 28th of July 2026 05:21:56 PM PDT
Bartholina burmanniana (L.) Ker Gawl. is found on clay slopes and flats from Clanwilliam to the Eastern Cape. It is a tuberous geophyte with a single prostrate hairy leaf, a hairy stem, and a solitary white flower marked with mauve spots and lines with a much divided lip. Plants flower in spring, usually only the first year after a fire. Height: 23 cm. The first photo was taken by Bob Rutemoeller near Greyton September 2003. The second photo is from Alan Horstmann. The third photo from the book Plants of the Klein Karoo courtesy of Jan and Anne Lise Schutte-Vlok.

Bartholina burmanniana, Greyton, Bob RutemoellerBartholina burmanniana, Alan HorstmannBartholina burmanniana, Jan and Anne Lise Schutte-Vlok

From Xanthorrhoea on Monday 27th of July 2026 05:09:40 PM PDT
Xanthorrhoea australis R.Br. grows in Victoria, in South Australia, the southern coast of New South Wales and Tasmania. This species is not often seen in bloom unless fire has stimulated its reproductive cycle. It has leaves that are softer and less rigid than some of the other species. Plants that have burned have black trunks with grass like leaves forming a skirt. It grows up to 3 meters. Flowers of this species have six petals. Photos were taken by Mary Sue Ittner and Bob Rutemoeller October 2007 in the Grampians where there had been fires earlier so there was a good display of flowers.

Xanthorrhoea australis, Mary Sue IttnerXanthorrhoea australis, Mary Sue IttnerXanthorrhoea australis, Mary Sue IttnerXanthorrhoea australis, Mary Sue IttnerXanthorrhoea australis, Mary Sue IttnerXanthorrhoea australis, Bob Rutemoeller

From Spring Blooming Crocus Three on Sunday 26th of July 2026 05:30:38 PM PDT
Crocus korolkowii Maw & Regel grows in the wild in an area stretching from Pakistan to Russia. It is reportedly very resistant to cold. It blooms throughout January here in my North Georgia, USA home. Often this plant starts before Crocus laevigatus is finished - providing perfect overlap. I have it growing in both very well drained soils and moister soils (although never approaching wet) and it has performed with mixed results in both locations. Height range: 10-20 cm. Photos 1 and 2 by Steve Burger, photos 3 and 4 by John Lonsdale; photo 4 is of a selection named 'Lucky Number'. Photo 5 of corms on a 10 mm grid by David Pilling.

Crocus korolkowii distant shot, Steve BurgerCrocus korolkowii closeup, Steve BurgerCrocus korolkowii, John LonsdaleCrocus korolkowii 'Lucky Number', John LonsdaleCrocus korolkowii corms 15th November 2013, David Pilling

From Dipcadi on Saturday 25th of July 2026 05:31:05 PM PDT
Dipcadi sp. Fianarantsoa, Madagascar -- the photos below were taken by Dylan Hannon.

Dipcadi sp., Fianarantsoa, Madagascar, Dylan HannonDipcadi sp., Fianarantsoa, Madagascar, Dylan HannonDipcadi sp., Fianarantsoa, Madagascar, Dylan Hannon

The photos below were taken by Nhu Nguyen of the same form.

Dipcadi sp., Fianarantsoa, Madagascar, Nhu NguyenDipcadi sp., Fianarantsoa, Madagascar, Nhu NguyenDipcadi sp., Fianarantsoa, Madagascar, Nhu NguyenDipcadi sp., Fianarantsoa, Madagascar, Nhu Nguyen

Dipcadi sp. ex Robertson, South Africa -- the photo was taken by Dylan Hannon of a form near Robertson, South Africa.

Dipcadi sp. Robertson, South Africa, Dylan Hannon

Dipcadi sp. ex Isalo, Madagascar -- the photo was taken by Dylan Hannon.

Dipcadi sp. Isalo, Madagascar, Dylan Hannon
Page last modified on November 14, 2023, at 05:05 PM
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