Scarlet gilia
Ipomopsis aggregata · Polemoniaceae
The gardener's calendar
Ideal time to plant scarlet gilia: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Polemoniaceae
- Type
- Annual or biennial herbaceous plant
- Foliage
- Deciduous
- Flowering
- June to September
- Mature size
- 60 to 90 cm in height
- Hardiness
- Tender, frost sensitive
- Origin
- Mountainous regions of southwestern United States
- Soil
- Well-drained, light, poor to average
Care
Exposure and light
Place your ipomopsis in full sun for optimal flowering. It tolerates partial shade but will flower less generously. It appreciates warm, airy locations that promote vigorous, compact growth.
Watering
Water moderately, without allowing the soil to become waterlogged. This plant prefers relative dryness and dreads excess moisture. During the growing season, water when the soil begins to dry at the surface.
Soil and drainage
Use light, well-drained soil, preferably poor to average. A substrate that is too rich encourages foliage at the expense of flowers. Improve drainage with sand or gravel if necessary.
Fertilizer
Apply a balanced fertilizer or one slightly enriched in phosphorus in spring. Limit nitrogen applications to prevent overly leafy growth. One application is generally sufficient for the season.
Pruning and maintenance
Remove faded flowers regularly to encourage continuous flowering. Pinch young plants to promote denser branching. Eliminate diseased or weak stems.
Pests and diseases
Ipomopsis is relatively healthy if growing conditions are suitable. Watch out for powdery mildew in excess humidity and spider mites in dry conditions. Promote good air circulation to prevent fungal problems.
Did you know?
The scarlet ipomopsis is an emblematic plant of the southwestern American mountains, beloved by hummingbirds that visit it in droves for its sweet nectar. Its scarlet tubular flowers, arranged in tight clusters, have inspired scientific research programs studying pollination. Its name 'aggregata' refers to the clustering of its flowers, a remarkable adaptation to maximize pollinator visits.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
- Jacob's ladderPolemonium caeruleum
- Panicle phloxPhlox paniculata
- Moss phloxPhlox subulata
- Tufted phloxPhlox douglasii
- Woodland phloxPhlox divaricata
- Jacob's ladderPolemonium reptans
Tips generated and checked by Viridia — adapt them to your local climate.