Dutch Hyacinth 'Jan Bos'

Hyacinthus orientalis

Family: Hyacinthaceae
Genus: Hyacinthus (hy-uh-SIN-thus) (Info)
Species: orientalis (or-ee-en-TAY-liss) (Info)
Cultivar: Jan Bos



Foliage Color:


Bloom Characteristics:

Flowers are good for cutting

Flowers are fragrant

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

This plant is suitable for growing indoors


6-12 in. (15-30 cm)


6-9 in. (15-22 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:

Full Sun


All parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:


Bloom Time:

Mid Spring



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

Elk Grove, California

Garberville, California

Los Altos, California

Loveland, Colorado

Algonquin, Illinois

Florence, Mississippi

Piedmont, Missouri

Absecon, New Jersey

North Ridgeville, Ohio

Painesville, Ohio

, Ontario

Norristown, Pennsylvania

Gilmer, Texas

Salt Lake City, Utah

Newport News, Virginia

Kalama, Washington

show all

Gardeners' Notes:


On May 22, 2011, nutsaboutnature from Algonquin, IL (Zone 5a) wrote:

This was my first year growing 'Jan Bos' & I love the super-bright Hot Pink color.

I planted them in front of the house at the foundation where we have shrubs & even though they aren't huge, they were so bright (almost fluorescent) that they caught your eye all the way at the street!.

I am going to plant more of them this Autumn.


On Mar 14, 2009, montsho from Tracy, CA (Zone 9b) wrote:

First time trying these. Really nice plant. Mine are a hot magenta pink color. They smell pretty good too!


On Jul 11, 2007, zone5girl from Painesville, OH (Zone 5b) wrote:

Although this is adverstised as red, you can see from the pics that it is dark pink, NOT red like in the catalogs.


On Jun 23, 2007, dicentra63 from West Valley City, UT (Zone 6b) wrote:

My Jan Boses struggle a bit because they have to come up through a dense mat of Stachys bizantina (Lamb's Ear), so they don't look as full as their neighbors.