My Everchanging Garden

Gardening That Grows With Me

Growing Angelonia – Give Them Room

I did not have good success growing Angelonia from seed my first year, but I will try again because, once established, Angelonia is an excellent annual for containers. I struggled with germination, although the seedlings that did germinate grew well. In the pots, Angelonia did not bloom or bulk up, but I suspect I overcrowded all my containers that first year. So lessons learned which is what gardening is all about.

This is my personal growing guide. I use it to track seed sources, when to start seeds and if I should adjust growing conditions in my own greenhouse and garden. Please don’t consider this professional grower’s advice. I like the information cards from Ball Seed – here is Serena Angelonia.


Stokes Seeds

  • Serena Rose
  • Serena Blue
  • Serena Purple
Hardiness 40°F or 4°C, heat and humidity tolerant
Exposure Full sun
Deer resistant Deer and rabbit resistant
Bloom time & length Late spring to late summer, filler thriller
Deadheading Not needed, continuous blooming, can shear
Water/soil Medium to average, don’t allow to dry out
Height 16-20 inches
Width 12-14 inches
Fertilizer Slow-release fertilizer, light feeder

My own notes: don’t overcrowd with mixed planters. This will impact growth and blooms.


Sow seeds 6-8 weeks before frost. Angelonia should not be planted out until warm weather is assured, generally 2 to 3 weeks after the last frost.

  • 10 weeks before planting out is Mar 18
  • pelleted seed on the soil surface – do not cover
  • As pellet disintegrates, seed needs light to germinate
  • 74°F/23°C for 4-5 days – use heat mat – warm water


  • 68-80°F/20-26°C days and 64-66°F/18-19°C nights
  • 4-4.5 in/10-11 cm pots
  • transplant when weather warms, 2-3 weeks after frost (May 27)
  • pinch young plants to encourage branching, no pinching once established
  • does not need deadheading

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