Because they’re only hardy in USDA zones 10 and 11, baby’s-breath euphorbia are most often grown as annuals or as indoor plants for part of the year (if you can provide good light). Be aware, they may shed some flowers and leaves when first brought indoors. If this happens, provide them with a bit more humidity either by spraying the plants regularly or placing the pot on a tray of pebbles and water. No deadheading is required as you grow baby’s-breath euphorbia. However, you can pinch young plants to encourage branching and trim back your plants at any time, either to shape them as you desire or to keep the plant size in check. That being said, baby’s-breath euphorbia is typically well-behaved and rarely squeezes out neighboring plants.
Light
For the best flowering, plant your Baby’s-breath euphorbia in a spot that gets full sun or partial shade. You should aim to make sure your plant receives at least six hours of sunlight a day. Too much shade will not only diminish flowering but may also cause the plant to become gangly as it reaches for the sun.
Soil
Baby’s-breath euphorbia plants are not terribly particular about their soil pH or soil texture and can adapt fairly easily to wherever they’re planted, as long as they’re kept regularly watered. That being said, for best success, you should choose a sandy, well-drained mixture with a neutral to acidic pH balance.
Water
Water your baby’s-breath euphorbia well, until the plant is established, at which point the plant will be drought-tolerant. Allow the plant to dry between each watering in order to avoid issues like root rot or fungal diseases.
Temperature and Humidity
Baby’s-breath euphorbia is not particularly picky about its temperature and humidity requirements and is able to adapt to a wide range of environments. It has great heat tolerance and can handle sustained temperatures as long as 40 degrees Fahrenheit. It can also be brought indoors come winter and does not require additional humidity.
Fertilizer
No fertilizer is needed, although a little boost in mid-summer can help keep baby’s-breath euphorbia plants going, especially if planted containers.
Baby’s-Breath Euphorbia Varieties
There are a variety of cultivars of baby’s-breath euphorbia, each boasting a slightly different look:
Breathless Blush Euphorbia: a cultivar with red-tinged leaves and white flowersDiamond Frost Euphorbia: a varietal featuring slender green leaves and delicate white flowersDiamond Mountain Euphorbia: a larger cultivar that spreads between 24 and 36 inchesDiamond Delight Euphorbia: a bush, full varietal with double the white flowers
Common Pests and Diseases
For the most part, baby’s-breath euphorbia grows problem-free. However, they can be affected by whitefly and spider mites, especially if kept in tighter growing conditions. To prevent these issues, provide good airflow around the plants and don’t overcrowd them.
