Polemonium foliosissimum, the towering Jacob's-ladder, is a rare species of flowering plant in the phlox family Polemoniaceae, native to the western United States; Arizona, Colorado, Idaho, Nevada, New Mexico, Utah and Wyoming. As its synonym Polemonium archibaldiae it has gained the Royal Horticultural Society's Award of Garden Merit.
Leafy jacob's ladder has strong disease resistance and is generally not susceptible to illnesses. Still, it can be affected by pests and diseases present in its environment. These problems are typically not serious. Regarding care, this plant needs a moderate amount of maintenance. It should be pruned regularly to preserve a good appearance and encourage healthy growth. Fertilizing can also aid in promoting blooms. Leafy jacob's ladder is well suited to anyone with outdoor space, such as a garden or patio, and does not demand extensive gardening experience. It may require increased attention when kept indoors.
How to keep Polemonium Foliosissimum.
Light
Leafy jacob's ladder is native to habitats like forest understories or rocky areas, where it occurs in natural shade. It prefers partial sun but can tolerate full sun or full shade, reflecting its versatile and hardy nature.
Fertilizer
The ideal time to fertilize a Leafy jacob's ladder is in early spring, when it is coming out of dormancy and entering a period of active growth. Fertilization supplies essential nutrients for healthy growth. Although Leafy jacob's ladder has relatively low fertilizer requirements, applying fertilizer annually can improve its survival and encourage better, longer-lasting flowers.
Pruning
The leafy Jacob's ladder plant boasts delicate, fern-like foliage and bell-shaped flowers. To encourage growth and maintain its shape, prune the plant in early spring by removing any dead stems. Thinning out older stems can also improve air circulation and reduce the risk of disease, boosting both the plant's appearance and its flowering vigor.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Polemonium
- Family
- Polemoniaceae
- Hardiness Zone
- 3-8
- Mature Height
- 30 cm to 91 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green
- Leaf Type
- Deciduous
- Flower Color
- White
- Flower Size
- 2.03 cm to 3.05 cm
- Bloom Time
- Late spring, Early summer, Mid summer
- Planting Time
- Spring, Summer
- Harvest Time
- Mid summer, Late summer, Early fall
- Native Area
- Mexico
Other names.
