Plant Care
›
Propagation
›
New Guinea Impatiens
Impatiens hawkeri
Reviewed by Kiersten Rankel M.S.
QUICK ANSWER
Stem cuttings root in 2 to 3 weeks and are the only home method that produces a plant matching the parent's color, because most New Guinea Impatiens are sterile or unreliable from seed.
Stay on top of plant care
Get seasonal reminders for watering and fertilizing, personalized for your plants.
Try Greg Free
Stem cuttings
Time
2–3 weeks
Level
Beginner
Success rate
High
You'll need
Sterile shears or a sharp knife
A clear glass jar or 4-inch pot
Filtered water (or tap left to sit 24 hours) or light potting mix
A clear plastic bag (if rooting in soil)
Bright indirect light
1
Cut a 4 to 5 inch tip with no buds
Choose a healthy stem and cut just below a leaf node with sterile shears. Pick a stem with no flower buds or open flowers. Buds and flowers steal energy that should go into rooting. Pinch off any buds you see on your cutting.
2
Strip the bottom leaves
Pull off the lower 2 leaves from each cutting to expose the bottom inch of stem. Bare nodes are where new roots emerge. The remaining 2 to 3 leaves at the top continue feeding the cutting through photosynthesis.
3
Choose water or soil rooting
For water rooting, place the cutting in a glass jar of clean water with the bare nodes submerged and leaves above the water line. For soil rooting, push the bare stem 2 inches into damp houseplant mix and cover with a clear bag to hold humidity.
Water rooting is faster to monitor visually but produces softer roots. Soil rooting takes the same time but skips the transition step.
Water rooting is faster to monitor visually but produces softer roots. Soil rooting takes the same time but skips the transition step.
4
Place in bright indirect light
Set in a spot with bright filtered light at room temperature. Direct sun heats the cutting and causes leaf wilt before roots form. New Guinea Impatiens roots best at 70 to 75 degrees Fahrenheit.
5
Refresh water weekly or vent the bag
If rooting in water, change the water every 5 to 7 days to keep it clean. If rooting in soil, open the bag for an hour every 2 days to refresh air. Roots appear within 2 to 3 weeks.
6
Pot up or remove the bag
Once water roots are 2 inches long, pot up into a 4-inch container of houseplant mix and water thoroughly. For soil cuttings, remove the bag and resume normal care.
Flowers appear within 4 to 6 weeks of potting up, matching the parent plant exactly.
Flowers appear within 4 to 6 weeks of potting up, matching the parent plant exactly.
WATCH FOR
The cutting wilts severely and the leaves turn translucent. That is from the cut end drying out before roots form, common when the soil bag is left open too long. Re-cut a half-inch above the original cut, dunk the new cut end in water, and rebag immediately. Healthy cuttings keep their leaves crisp and green throughout rooting.
Stay on top of plant care
Get seasonal reminders for watering and fertilizing, personalized for your plants.
Try Greg Free
About This Article
Kiersten Rankel M.S.
Botanical Data Lead at Greg · Plant Scientist
Editorial Process
Propagation methods verified against Impatiens hawkeri growth data from Greg's botanical database, cross-referenced with USDA hardiness zone data and published horticultural research.
2,770+ Greg users growing this plant
USDA hardiness zones 10a–11b