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InsightHorizon Digest

Why are my Calibrachoa leaves turning yellow

Author

Isabella Harris

Updated on March 28, 2026

Yellow calibrachoa leaves are cause by a lack of nutrients. Calibrachoa is a heavy feeder due to it fast growth and requires fertilizer once every 4 weeks to prevent yellow leaves and promote flowering. Calibrachoa can suffer from drought which causes the leaves to wilt.

How often should I water my Calibrachoa?

Depending on your conditions, you may have to water as often as twice a day. Check the soil frequently, especially at the beginning of the season, until you get to know your plant’s needs; watering requirements may change as the summer heats up. Take care not to overwater the plant, as this can encourage root rot.

Why are my Superbells leaves turning yellow?

If you have been fertilizing regularly with a well-balanced fertilizer and the foliage is still turning yellow, it is probably because the pH range in your soil has gotten a bit high or low. The most common impact of this is that Iron can no longer be taken up by the plant, even if it is available in the soil.

How do you care for potted Calibrachoa?

Caring for million bells flower is minimal. The soil should be kept fairly moist but not soggy, especially in full sun areas as they may succumb to the intense heat of summer. Container plants require more watering.

Will Calibrachoa come back?

Sometimes calibrachoa plants die back in winter despite a gardener’s best efforts to keep them alive, but propagating a new plant is possible.

How often Miracle Grow hanging baskets?

Simply feed them every 1-2 weeks. The formula is safe for all plants, and is guaranteed not to burn when used as directed. Get beautiful results with Miracle-Gro®.

How do you fertilize Calibrachoa?

To keep Calibrachoa plants strong fertilize every other week with a liquid fertilizer. Once per month if you’re fertilizing with a solid granular slow-release plant fertilizer. Many growers add granular fertilizer with more phosphorus (second fertilizer number) to the soil when planting Million Bells initially.

Does Calibrachoa like sun or shade?

Exposure: Calibrachoa plants bloom best with at least six hours of full sun, though they can tolerate partial shade.

How do you revive a dying Calibrachoa?

To revive yellowing calibrachoa, it is important to fertilize your calibrachoa pots if the leaves are turning yellow with a half strength all purpose fertilizer.

What is killing my yellow bells?

This insect damage is common to Tecoma in warmer parts of the Southwest. It’s feeding damage by the young — or larvae — of a moth given the common name Tecoma leaf tier skeletonizer. This damage is like the skeletonizer damage we see on grapes but caused by the young of a different moth.

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Is calibrachoa annual or perennial?

Calibrachoa or trailing petunia is a tender perennial which produces flowers that look like small petunias. These are compact, mounded plants which grow 3-9” tall on mostly trailing stems.

How do you keep calibrachoa from getting leggy?

If your calibrachoas start to get leggy, as they often do by mid-summer, clip or pinch them back to encourage branching and new flowers. Just don’t trim off more than 20 percent of your plants at one time, this can cause them too much stress.

How do you winterize Calibrachoa?

Place in a container with fresh potting soil and transport to a cool space that stays above freezing – a garage should do nicely. Cut back the stems to about 2 inches (5 cm.) above the soil and water sparingly during the winter months.

Can you take cuttings from Calibrachoa?

Calibrachoa are hybrids and therefore do not produce seeds. Many plants are trademarked, which means that, while propagation through softwood cuttings is possible, it’s technically illegal. It’s best to buy young plants at the garden centre in early spring – they are excellent value.

Are Calibrachoa Hardy?

Type: Tender perennial, usually grown in the UK as a half-hardy annual. Hardiness: Tender in most of the UK, protect from frost.

What is the best fertilizer for Calibrachoa?

Getting Calibrachoa to Bloom Requires the Right Fertilizer A 20-10-20 fertilizer that has a slow release mechanism is ideal. Use this every other week to promote flower growth. If you’ve been using a fertilizer with too much nitrogen, this can cause poor flower development.

What is supertunia?

A Supertunia® is a petunia that has been breed and tested for excellence in performance, flower power, and overall habit by the folks at Proven Winners®. … They have a large flower, taller plants called the Tidal Wave™, a small flower with bold colors called Shock Wave™, and a spreading variety called Easy Wave™.

Do Calibrachoa close at night?

Calibrachoa plants have thick, sticky leaves, with blooms that open during the day and close at night. … They grow very fast and the flowers bloom for a long time (from spring right through late fall.) Depending on the variety, calibrachoa can grow 5-10 inches tall and spread 12-48 inches wide.

Why is Miracle-Gro bad?

Miracle-Gro supplies an enormous amount of nitrogen for plants so that they grow big, bushy, green, and fast. The problem with MG is that the nitrogen is derived from synthetic ammonium and water soluble nitrates, producing off-chemicals that are harmful to soil microbes, worms, and all other forms of life in the soil.

Can you use too much Miracle-Gro?

While fertilizer used in the right quantities can indeed promote houseplant growth, when overdoing it, you hinder the very growth you want. In fact, you’re slowly killing your plant, and so its foliage, stems, or roots may be undersized. They’ll also look brittle, crinkled, wilted, or limp.

Can you overfeed hanging baskets?

Over-fertilizing is often as much of a problem for plants as under-fertilizing. It gives plants a few moments of big blooming glory, only to have them become root-bound and overgrown within just a month or two. Even the best potting soil will eventually run out of nutrients for hanging baskets.

How do you fix root rot in calibrachoa?

If calibrachoa are exhibiting iron deficiency, the fastest way to correct the problem is applying an iron chelate. The most effective chelate is Iron-EDDHA. It allows iron to remain soluble and available for plant uptake even if the pH of the growing medium exceeds 9.0.

How often should you water Million Bells?

The plant needs regular watering, every week in the growing season, and more if you grow it in a container. Allow the soil to dry out completely between waterings. Calibrachoa is drought tolerant, but performs best with adequate water.

Do hummingbirds like Calibrachoa?

Two great choices, used singularly or mixed together in a hanging basket for a sunny location, are trailing petunias and Calibrachoa (Million Bells). Both of these plants produce colorful, funnel-shaped flowers filled with nectar that hummingbirds can’t resist.

Does Calibrachoa need to be deadheaded?

Do Calibrachoa need to be deadheaded? Calibrachoa is a low maintenance plant. The answer is no, Calibrachoa don’t need to be deadheaded – they will continue to flower – and everyone shouts “yay!”

Can you root calibrachoa in water?

Other cultural considerations are also important to successful calibrachoa cutting propagation. … Keeping the cutting from wilting is important, as the new plant will put its efforts to saving itself rather than rooting in low moisture settings. Use de-mineralized water to irrigate.

What are miniature petunias called?

Calibrachoa are called mini petunias, but they aren’t actually petunias. Although they resemble their petunia relatives (Petunia spp.), calibrachoa are shorter and blooms are about an inch in diameter. Like petunias, however. they are typically grown as annuals and make wonderful bedding and container plants.

How much water do yellow bells need?

Water newly planted yellow bell bushes every five to seven days and established bushes every six to 10 days. Wet the entire root zone to a depth of 12 inches and let the soil dry out in the top 1 to 2 inches before watering again.

When should yellow bells be pruned?

Prune yellow bells shrubs after the last blooms fade in late spring or early summer. Avoid pruning in late summer or fall as this will affect the number of blooms the plant will produce in the spring as buds bloom on older growth of the plant.

Why is my yellow bells not blooming?

If an esperanza plant was blooming well when you brought it home from the nursery but later refused to flower in the same pot, it may have become pot bound. … Plants do need nitrogen for good growth, but too much nitrogen in the soil makes them unable to absorb phosphorus from the soil, which helps promote blooming.

Should you trim Million Bells?

Well-suited for hanging baskets and patio containers, Million Bells is a bushy, trailing plant with a summer-long abundance of small, brilliantly colored, bell-shaped blooms. … You can give it a quick haircut with pruning shears, but more deliberate trimming creates a well-rounded plant.