My bulbs are planted in a planter and have been growing great.  Now the leaves are turning a rust color.  Is this too much water?

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Ranunculus Problems

Ranunculus asiaticus, also called Persian Buttercup, is a perennial plant known for its blooms. Ranunculus plants are easy to grow and care for, but there are a few problems that plague this species. The best way to ensure a healthy ranunculus plant is to recognize the signs of pests and diseases and treat them to avoid more serious problems.


  • Ranunculus has large, full flowers with thin, delicate petals. The flowers come in a variety of colors including yellow, orange, salmon, pink and white. They range in height from 12 to 18 inches and are about 12 inches wide. They do well in full sun and moist, well-drained soil. Several diseases and pests can cause problems for ranunculus.


  • Aphids are small, soft-bodied sucking insects that affect ranunculus. They can be brown, black, or green. They attack the leaves of ranunculus and suck fluids and nutrients from it. This can lead to stunted growth and leaf drop. They also produce a substance called honeydew, which attracts ants and can lead to a condition called sooty mold. Sooty mold produces a black substance on the leaves of ranunculus that blocks sunlight and prevents photosynthesis.

Spider Mites

  • Spider mites are small, spider-like sucking insects that latch on and suck nutrients from the leaves. They can also transmit viruses to ranunculus. Heavy infestation is possible because the females lay up to 200 eggs in a 30-day period. Infestations can cause leaf drop and plant death. Spider mites also produce a web that can cover leaves and blooms.

Powdery Mildew

  • Powdery mildew is a fungus more commonly formed in areas of poor air circulation and not enough sunlight. It is common in areas with warm, humid days followed by cool nights. This fungus grows on the surface of the leaves of the ranunculus and can cause leaf drop and wilting.


  • Rust is another fungal disease that causes small orange, brown or yellow spots on the bottom of the leaves. The spores are easily spread by splashing water and rain. Rust commonly affects ranunculus when the humidity is high or in times of excessive rain. It can lead to leave drop.


  • Mollusks such as slugs and snail are attracted to ranunculus. They eat holes in the leaves and can bite through entire stems. They favor moist climates so, it is important to keep the soil around the Ranunculus well-drained.


Related questions

1 answers
linda jordan asked Jul 8, 2014
1 answers
0 answers
anonymous asked May 18, 2013
0 answers
anonymous asked Aug 12, 2014
0 answers
anonymous asked May 4, 2014
1 answers
anonymous asked Mar 1, 2014
1 answers
0 answers
anonymous asked Jul 31, 2013
1,152 view
0 answers
anonymous asked Jul 11, 2013
Welcome to Please ask and answer yard and garden questions and help build a great gardening community. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to


Most popular tags

please help how to take care of yellowing leaves best time to prune how do i get rid of them harvest please help asap! browning leaves picking growing tips please help asap how to grow. how to grow pruning tips will it survive identify please identify not sure what to do yellow leaves transplant harvesting how to prune best time to plant help! freezing might not survive no flowers what do i use to rid them advice needed info. when and how to transplant get rid of invasive brown edges please help. help curling leaves should i remove i need growing tips no blooms please advise how to transplant what causes should i cut it back? pruning best way to transplant and when first time leaf drop buds falling off what can i do when to cut back best time to transplant should i cut it back advise on planting will it grow tomato plants what to do dying leaves turning brown leaves falling off ripe leaf problems caring for plants soil type watermelon what does it look like seeds planting gardenia plant mango and avacado tree propagation questions cuttings planting schedule melon ripeness brown leaves what are these worms hibiscus plant advise needed gardenning need advice were should i plant it how to treat tomatoes root depth get rid of fungus distance between plants dying leaves when to pick tomato plants leaves curling up how do i get rid of it when to harvest vegetables how short never bloom buy seed to plants please help! need help will they survive get rid of mushrooms permantely freezing fresh veggies get rid of mushrooms yellow and dropping leaves