I'd recommend switching to a balanced fertilizer with a lower nitrogen content. Also, impatiens prefer moist but not waterlogged soil, so let the top inch of soil dry out before watering. Lastly, make sure they're not getting too much shade. Impatiens do need some indirect light to flower well, even in shady spots.
Coffee, cool and black with no sugar or milk, is also great for many plants, especially acid-loving houseplants such as African violets (Saintpaulia spp), Cyclamen (Cyclamen persicum), impatiens, Norfolk Island pines, Christmas cactus (Schlumbergera bridgesii), jade plant (Crassula ovata), spider plants, Phalaenopsis ...
Deadheading impatiens: All types of impatiens are self-cleaning. That means the dead flowers fall away and you don't have to manually remove them. They are low-maintenance bloomers.
Care. Impatiens growing in garden beds usually need to be watered once a week during dry weather. Plants growing in containers or hanging baskets should be checked frequently and watered when the soil surface is dry. Impatiens require moderate fertilization.
Impatiens thrive when the temperature is 68-85° F in the daytime and 60-64° F at night. They can react badly to excessive heat, and if high temperatures last a while, they'll begin to wilt. Give them water, and they should quickly revive. Impatiens do well in humidity.
Overwatering signs: Yellow leaves, swollen tissues, and mushy stems. Fungal issues: Mold, musty smell, or powdery growth on leaves. Prevent and treat: Ensure proper drainage, isolate affected plants, and prune regularly.
'Most impatiens thrive in filtered or partial shade and must have protection from hot afternoon sun to maintain their colors. There are some newer varieties which grow well in sunny areas. They enjoy moist soil, too, and you'll see their soft, fleshy stems wilt if they need watering.
So, yes - flowers will return even if you don't deadhead spent blooms, but it may take a longer time for new flowers to appear than if you remove faded blooms. Sculptural interest, self-seeding and self-cleaning are all reasons why you might choose to not deadhead your plants.
Pruning Impatiens
Impatiens can become leggy in late summer, especially in deep shade. To promote bushier growth and more flowers, trim off the top 1/3 of the plant. This approach can also be used with impatiens that begin to shade out their neighbors—'Vigorous' SunPatiens can sometimes reach as much as 3 feet tall.
In some workplaces, the only "watering" plants receive is from emptying leftover coffee into the soil, and they are often struggling. However, using leftover coffee once a week and coffee grounds sparingly is beneficial.
After planting, impatiens should be fertilized monthly using either a granular, water-soluble or a foliar fertilizer that contains higher amounts of phosphorus than nitrogen to promote new flower development over foliage growth.
Coffee grounds can most certainly be added to your compost and also directly to your soil. Instead of simply tossing them out though, you may wish to incorporate them a bit more thoroughly by digging them in.
Common Reasons Why Impatiens Isn't Blooming
Impatiens need part shade, but they still need some light. Some varieties can bloom in full shade, but a lack of sunlight could cause your plant to not bloom.
No, impatiens are not poisonous to dogs.
Impatiens are beautiful flowering plants that go by many names, including Buzzy Lizzies, Patient Lucies, Patient Plants, Tangerine Impatience, and Giant Touch-Me-Nots. These plants are part of the Balsaminaceae family and are considered non-toxic to cats and dogs.
Pruning and deadheading:
Most Bidens don't need pruning, but if your plants become leggy or threaten to outgrow their space, simply give them a light trim and they will soon be covered with a fresh flush of blooms. Because bidens flowers are self-cleaning, there is no need for deadheading.
Rejuvenating impatiens that have become leggy and overgrown is as simple as a quick pruning. First, in order to keep your plants blooming all summer, pinch off the tops of stems after each flower has bloomed and faded. This deadheading encourages new blooms. You can do this regularly throughout the growing season.
Impatiens actually have moderate water needs. These plants prefer well-draining soil. If you've planted your Beacon Impatiens in the ground, water them every few days to assure good rooting. During hotter temps in the middle of summer, you'll need to increase the frequency or the amount of water.
They are also used in container gardens, ranging from hanging baskets to window boxes. Here are the main care requirements for growing impatiens: Choose a spot that gets dappled sunlight or full shade; avoid planting in full sun. Prepare moist, well-draining soil that's rich in nutrients.
Begonias are tolerant of a range of light conditions, from full sun to shade. In colder climates, plants can tolerate more light. In warm regions, they need protection from hot afternoon sun to prevent leaf scald. Varieties with darker foliage can withstand more light than those with green leaves.
If fed too much, impatiens will happily grow a lot of leaves, but form few flowers making them higher-maintenance than most flowers. Pro tip: Miracle-Gro® Water Soluble Bloom Booster Plant Food can help nourish Impatiens while boosting its blooms.
Brown, crisp and curling leaves
Curling, crispy or lightweight brown leaves are another sign of underwatering. Unfortunately, brown leaves are common in both overwatered and underwatered plants. But again, overwatered brown leaves are usually soft and limp rather than crisp and crushable.
Impatiens are low-maintenance and generally do not require much pruning or deadheading, but trimming the plant can rejuvenate growth and maintain a neat appearance. Trimming a plant to promote growth can seem counterintuitive, but learning how to correctly prune Impatiens will encourage more growth and more flowers.