25 Dazzling Flowers That Start With J

There are beautiful flowers for every letter of the alphabet. In this article, we have a list of plants with flowers that start with J and key information about each one. Let’s take a look at all the different J plants.

To learn more about the various flowers available for your garden, make sure to check out our list of “Flower Names A to Z”.

Flowers That Start With The Letter J

25 Dazzling Flowers That Start With J

1. Jaborosa

Scientific Name: Jaborosa integrifolia
Sun: Full sun, partial shade
Water: Keep soil moist
Size: Up to 6 inches (15 centimeters)
Lowest Temperature: 10°F (-12°C)
Toxicity: High
Colors: White

The jaborosa is part of the nightshade family and has been used for medicinal purposes. However, it’s highly toxic if consumed.

2. Jacaranda

Scientific Name: Jacaranda mimosifolia
Sun: Full sun
Water: Keep soil moist
Size: 25-50 feet (7-15 meters)
Lowest Temperature: 30°F (-1.1°C)
Toxicity: None
Colors: Purple

The Jacaranda is a tree known as the black poui that grows beautiful purple flowers. They can be grown indoors, but they likely won’t flower.

3. Jack-in-the-Pulpit

Scientific Name: Arisaema triphyllum
Sun: Partial shade, deep shade
Water: Keep soil moist or occasionally wet
Size: 1-2 feet (30-60 centimeters)
Lowest Temperature: -30°F (-34°C)
Toxicity: High, toxic if eaten
Colors: Green, purple, lavender, white, brown, copper

This flower grows a fruit that looks like a flower. It shouldn’t be eaten since the entire plant is highly toxic.

4. Jacob’s Ladder

Scientific Name: Polemonium caeruleum
Sun: Partial shade, deep shade
Water: Keep soil moist
Size: 1.5-2 feet (45-60 centimeters)
Lowest Temperature: -30°F (-34°C)
Toxicity: None
Colors: Blue

Jacob’s ladder may benefit from afternoon shade in hot climates to prevent the foliage from burning. This plant is self-seeding, so it will easily spread in the garden if given the right conditions.

5. Jade Vine

Scientific Name: Strongylodon macrobotrys
Sun: Full sun, partial shade
Water: Keep soil moist
Size: 30-50 feet (9-15 meters)
Lowest Temperature: 30°F (-1.1°C)
Toxicity: None
Colors: Pink, green

Jade vine is a tropical plant that can be grown indoors in cooler climates.

6. Jamesia Americana (Waxflower)

Scientific Name: Jamesia americana
Sun: Full sun
Water: Allow soil to dry between waterings, drought tolerant
Size: 3-6 feet (0.91-1.8 meters)
Lowest Temperature: -25°F (-31.6°C)
Toxicity: None
Colors: White

The waxflower is a flowering shrub that’s native to the hot and dry southwestern United States. It should be grown in a container in colder climates and brought inside during the winter.

7. Japanese Anemone

Scientific Name: Eriocapitella hybrida
Sun: Full sun, partial shade, dappled shade
Water: Keep soil mostly moist
Size: 3-4 feet (0.91-1 meters)
Lowest Temperature: -30°F (-34°C)
Toxicity: High if eaten in large quantities or if it touches the skin
Colors: Pink, red, burgundy, yellow, gold, green, purple, lavender, white

This flower can cause skin irritation if you touch it, but it grows beautiful blooms in the late summer and throughout fall.

8. Japanese Cobra Lily

Scientific Name: Arisaema sikokianum
Sun: Partial shade, deep shade
Water: Keep soil moist or wet
Size: 1.5-2 feet (45-60 centimeters)
Lowest Temperature: -20°F (-28°C)
Toxicity: High
Colors: Green, purple, white

This plant is related to the jack-in-the-pulpit and looks similar, but they’re two different flowers.

9. Japanese Iris

Scientific Name: Iris ensata
Sun: Full sun, partial shade
Water: Keep soil moist, tolerant of standing water in the warm months
Size: 2-4 feet (60-121 centimeters)
Lowest Temperature: -30°F (-34°C)
Toxicity: Low
Colors: Pink, yellow, gold, blue, purple, lavender, white

The term “Japanese iris” encompasses three species of Irises, hanashōbu, kakitsubata, and ayame.

Its three colors make it a wonderful addition to a Zen garden.

10. Japanese Kerria

Scientific Name: Kerria japonica
Sun: Partial shade, dappled shade, deep shade
Water: Allow soil to dry slightly between waterings
Size: 3-7 feet (0.91-2.1 meters)
Lowest Temperature: -30°F (-34°C)
Toxicity: None
Colors: Yellow, gold

This is a shrub that grows a lot of flowers on it. It will work well as a border or a point of interest in a landscape.

11. Japanese Lantern

Scientific Name: Physalis alkekengi
Sun: Full sun
Water: Keep soil moist
Size: 1-2 feet (30-60 centimeters)
Lowest Temperature: -35°F (-37.2°C)
Toxicity: None
Colors: White

This plant may spread aggressively if it has the space and may require frequent pruning.

12. Japanese Pachysandra

Scientific Name: Pachysandra terminalis
Sun: Partial shade, deep shade
Water: Keep soil moist, drought tolerant
Size: 6-12 inches (15-30 centimeters)
Lowest Temperature: -30°F (-34°C)
Toxicity: None
Colors: White

This is a low-laying ground cover that grows small flowers.

13. Jasione

Scientific Name: Jasione
Sun: Full sun, partial shade
Water: Keep soil moist
Size: 10-14 inches (25-35 centimeters)
Lowest Temperature: -20°F (-28°C)
Toxicity: None
Colors: Blue, white

14. Jasmine

Scientific Name: Jasminum officinale
Sun: Full sun, partial shade
Water: Keep soil moist, occasionally dry
Size: Vines up to 40 feet (12 meters)
Lowest Temperature: 5°F (-15°C)
Toxicity: None
Colors: White

Jasmine can be grown indoors in bright light all year long or during winter in cold climates.

Jasmine is popular for its scent and is said to help alleviate anxiety and increase productivity.

15. Jerusalem Artichoke

Scientific Name: Helianthus tuberosus
Sun: Full sun, partial shade
Water: Keep soil slightly dry, drought tolerance
Size: 6-10 feet (1.8-3 meters)
Lowest Temperature: -35°F (-37.2°C)
Toxicity: None
Colors: Yellow, gold

The Jerusalem artichoke is in the sunflower family and has an edible root.

16. Jerusalem Sage

Scientific Name: Phlomis fruticosa
Sun: Full sun, partial shade
Water: Can tolerate dry or moist soil
Size: 2-4 feet (60-121 centimeters)
Lowest Temperature: 5°F (-15°C)
Toxicity: None
Colors: Yellow, gold

Jerusalem sage is a shrub that can spread out a bit wider than its height.

17. Jessamine

Scientific Name: Cestrum
Sun: Full sun, partial shade
Water: Keep soil moist
Size: 2-6 feet (0.6-1.8 meters)
Lowest Temperature: -50°F (-45.5°C)
Toxicity: Low
Colors: Red, burgundy, purple, lavender, white

This plant grows berries after the flowers but they shouldn’t be eaten because they’re toxic.

18. Jewel Orchid

Scientific Name: Ludisia discolor
Sun: Part shade
Water: Keep soil moist
Size: 3-18 inches (7-45 centimeters)
Lowest Temperature: 40°F (4.4°C)
Toxicity: None
Colors: Red, green, white

19. Jewelweed

Scientific Name: Impatiens capensis
Sun: Partial shade, dappled shade, deep shade
Water: Keep soil moist and occasionally wet
Size: 3-5 feet (0.91-1.5 meters)
Lowest Temperature: -50°F (-45.5°C)
Toxicity: None
Colors: Orange, yellow, gold

20. Joe Pye Weed

Scientific Name: Eutrochium purpureum
Sun: Full sun, partial shade
Water: Keep soil moist and occasionally wet
Size: 2-5 feet (0.6-1.5 meters)
Lowest Temperature: -30°F (-34°C)
Toxicity: None
Colors: Pink

This flower has a sweet vanilla scent. Although it likes moisture, it can withstand a bit of dry soil.

21. Johnny Jump Ups

Scientific Name: Viola tricolor
Sun: Full sun, partial shade
Water: Keep soil moist
Size: 3-10 inches (7-25 centimeters)
Lowest Temperature: -50°F (-45.5°C)
Toxicity: Very low, only toxic if eaten in large quantities
Colors: Orange, yellow, gold, blue, purple, lavender, cream, tan, white, variegated

22. Jonquil (Daffodil)

Scientific Name: Narcissus jonquilla
Sun: Full sun, partial shade
Water: Keep soil moist
Size: 6-18 inches (15-45 centimeters)
Lowest Temperature: -30°F (-34°C)
Toxicity: Low
Colors: Yellow, gold

23. Joseph’s Coat

Scientific Name: Amaranthus tricolor
Sun: Full sun, partial shade, needs afternoon shade
Water: Keep soil moist
Size: 1.5-5 feet (0.3-1.5 meters)
Lowest Temperature: -50°F (-45.5°C)
Toxicity: None
Colors: Red, yellow, gold, green

This plant’s leaves are showier than its flowers. The red and yellow leaves will stand out like a flower in a flower bed.

24. Jumbie Bean

Scientific Name: Leucaena leucocephala
Sun: Full sun
Water: Tolerant to most conditions ranging from dry to wet soils
Size: Up to 20 feet (6 meters)
Lowest Temperature: 40°F (4.4°C)
Toxicity: Medium, seeds can be eaten occasionally if cooked
Colors: White

This is a flowering tree that can be invasive, but it provides shade, fuel, fodder, and improves soil, which is often why it’s grown despite the invasive tendencies.