You may not expect weewee to gravel Agapanthus industrial plant ( Agapanthusspp . ) because they ’re commonly known as lily - of - the - Nile , but prolonged wet weather condition queer them to several fungous disease . One of those disease transforms their globes of flush into balls of fuzz . Others assail their curve greenish leaf or waste their roots or bulbs . bear on both in - ground and container plants , these diseases occur where lily - of - the - Nile varieties grow outdoors as perennials , U.S. Department of Agricultureplant hardiness zones6 through 11 .
Warning
When treating a diseased lily - of - the - Nile , dress to protect yourself from the plant’stoxic , skin - irritating sap .
Gray Mold
grey mold fungus preys on die flowers of lily - of - the - Nile . It spreads most quickly when humidness is eminent and the air temperature is 70 to 77 grade Fahrenheit . jazz carries the fungus from antecedently infected plant life junk to healthy plants , where it devours the flowers and germinates into masses ofgrayish spore .
Gray Mold Prevention
A combining of cultural measures may keep gray mold :
Fungicide for Gray Mold
Consider spray the plants with constitutional , quick - to - use neem oil colour . To * * preventgray mold * * , one neem oil producer recommends spraying plants every one to two week during warm , humid or wet weather . Spray the plant until the neem oil runs from all the flowers and leaf .
address existing gray moldweekly with quick - to - use neem oil until the symptoms subside . Then spray the neem oil every two hebdomad to preclude reinfection . Spray the affected plant until the neem oil runs from their flowers and leaves .
Tip
Remove infected plant parts with clean , sharp stem cutter disinfect in rubbing alcohol before each cold shoulder and after you cease to prevent the spores from spreading .
Anthracnose Leaf Spot
Water splashes anthracnose leaf - position fungus onto lily - of - the - Nile foliage . Anthracnose fungi cause yellow areas — sometimes with tan or rust fungus - colored maculation — along leaf margin ; the infection move inward , and the leaves finally die .
Prevent or treat anthracnoseleaf spot as you would gray modeling , with adequate spacing , morbid foliage and debris disposal , and proper watering . Start spray the plant with neem rock oil as soon as their leaves emerge in outflow , entirely covering the entire plants . Spray again hebdomadal while pelting is likely .
Underground Diseases
Bulb- and beginning - putrefaction fungus thrive in tender , sozzled soil .
Bulb Rot
Bulb waste invades damaged lightbulb , causing yellowing , dying leaves . In innovative stage of the disease , entire leaf clustering collapse . The decayed bulbs are filled with pinkish - browned decay and pull from the soil without electrical resistance . The disease remains infectious even in bulb lifted out of the primer for computer memory .
Root Rot
Like bulb rot , root rot yellows and wilts the leaves . It may stunt or even shoot down the industrial plant . stirred root are dark , decayed and thin .
Treatment of Bulb and Root Rot
Damage controller takes precedence in treat bulb and radical guff . Dispose of the diseased plantsand infected soil . Discard potted plants along with their contaminated originate medium and containers . Dealing with infected in - priming coat lily - of - the - Nile industrial plant , however , takes more elbow grease :
Things Needed
Step 1
Dress in long trouser , a long - sleeved shirt , closed - toe shoes and rainproof gloves .
Step 2
Pruneeach bulb rot - infected or root rot - infected lily - of - the - Nile clump ’s leaves back to the dirt with pruning shears . Disinfect the pruning shear in rubbing alcohol between cuts and after pruning .
Step 3
Put the distant leaves in sealable credit card grip .
Step 4
Dig around each lily - of - the - Nile clump , working a perennial jigaboo ’s sharp blade down and under the center of every lump to loosen the rootage .
Step 5
go up the loosened bunch out of the ground withas much of their ground as possible .
Step 6
Check the areawhere the plants were for root remnant . Seal the root end and the loosened lump in the plastic bags with the remote leaves for disposal .
Step 7
scan the stain smooth . handle it with heavy cardboard .
Step 8
cross the heavy composition board with a 3- to 4 - inch layer of organic mulch , such as compost or Grant Wood chip . The mulch will prevent sunshine from reaching any origin remnants , which will eventually die .
Step 9
Disinfectthe jigaboo and rake with rubbing alcoholic drink before reprocess them .
