Also known as False Indigo · 103 gardener saves
Amorpha: the varieties gardeners actually grow
Amorpha, the genus most gardeners know as false indigo. We track 3 varieties; these are the ones gardeners actually save and plant, ranked by real saves rather than catalog marketing. Each links to full care, bloom, and live price data.
The 3 most-saved Amorpha varieties
Of 3 in the catalog — ordered by how many gardeners actually grow them.
#1 most savedLeadplant
Amorpha canescens 'Wisconsin form'
#2 most savedFalse Indigo Bush
Amorpha fruticosa
Dwarf Indigo Bush
Amorpha nana
How to grow Amorpha
What the Amorpha varieties in our catalog actually agree on — drawn from the care records of the 3 most-grown of them, not from a generic template.
The Amorpha year
- PruneFebruary100% of varieties
Prune back hard in late winter to encourage dense, bushy growth.
- PlantMarch, April, September and October67% of varieties
Plant in spring or fall to establish roots in cooler weather.
Do
- Mulch to conserve moisture
- Provide full sun for best flowering
- Prune in late winter to control size and shape
- Allow it to naturalize in informal garden settings
- Use it for erosion control on slopes and banks
Avoid
- Do not plant in deep shade, which reduces flowering
- Avoid planting in highly manicured formal gardens where its wild habit looks out of place
- Don't worry about poor soil; it is highly adaptable
- Avoid excessive fertilization, which is unnecessary
What goes wrong with Amorpha
| Problem | What you'll see | What to do |
|---|---|---|
| Aphids | Clusters of small insects on new growth, sticky honeydew. | A strong spray of water can dislodge them. Use insecticidal soap for heavier infestations. |
| Leaf Spot | Small, dark spots on leaves, which may yellow and drop. | Generally not serious. Ensure good air circulation and remove fallen debris. Fungicides are rarely needed. |
| Rust | Orange or brown pustules on the undersides of leaves. | Improve air circulation. Remove and destroy infected leaves. Fungicides are an option for severe cases. |
| Powdery mildew | White powder on leaves | Improve air circulation and apply fungicide |
Making more Amorpha
Seed
- Collect seed pods in fall when they turn dark brown
- Scarify seeds by nicking the seed coat or using sandpaper
- Sow seeds outdoors in fall or cold stratify for 60-90 days
- Germination occurs in spring as soils warm
Cuttings
- Take semi-hardwood cuttings in late summer
- Dip in rooting hormone
- Place in moist soil and keep humid for 4-6 weeks
Amorpha questions
How many types of Amorpha are there?
The Sow catalog tracks 3 distinct Amorpha varieties. The most popular — ranked by 103 real gardener saves — are shown first above.
What zones does Amorpha grow in?
Across its varieties, Amorpha covers USDA Zones 4–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.
When does Amorpha bloom?
Most Amorpha varieties bloom in mid summer, late spring. Staggering early, mid, and late varieties extends the genus's season in one bed.
Which Amorpha should I choose?
Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.
Keep exploring
Amorpha shows up in
Design with Amorpha in your own yard
Snap a photo of your space and see these varieties planted in it — sized correctly, matched to your zone, with care reminders included.
