25 Flowers That Start With The Letter 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.

Flowers That Start With J

Quick Links

  1. Jaborosa
  2. Jacaranda
  3. Jack-in-the-Pulpit
  4. Jacob's Ladder
  5. Jade Vine
  6. Jamesia Americana (Waxflower)
  7. Japanese Anemone
  8. Japanese Cobra Lily
  9. Japanese Iris
  10. Japanese Kerria
  11. Japanese Lantern
  12. Japanese Pachysandra
  13. Jasione
  14. Jasmine
  15. Jerusalem Artichoke
  16. Jerusalem Sage
  17. Jessamine
  18. Jewel Orchid
  19. Jewelweed
  20. Joe Pye Weed
  21. Johnny Jump Ups
  22. Jonquil (Daffodil)
  23. Joseph's Coat
  24. Jumbie Bean
  25. Justicia (Shrimp Plant)

1. Jaborosa

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

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

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

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

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)

jamesia americana

  • 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 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

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

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

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

10. Japanese Kerria

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

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

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

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

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.

15. Jerusalem Artichoke

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

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 a bit wider than its height.

17. Jessamine

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

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

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

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

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)

jonquil

  • 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

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 more showy than its flowers. The red and yellow leaves will stand out like a flower in a flower bed.

24. Jumbie Bean

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.

25. Justicia (Shrimp Plant)

justicia

  • Scientific Name: Phlogacanthus guttatus, formerly Justicia guttata
  • Sun: Full sun, partial shade
  • Water: Keep soil moist
  • Size: 1-3 feet (30-91 centimeters)
  • Lowest Temperature: 20°F (-6°C)
  • Toxicity: None
  • Colors: Pink, red, orange, yellow, gold, green, white