The annual cosmos is have sex for its showy summer to fall blooms atop an just fork habit . Leaves are easy green and fern - comparable . Daisy - like flowers may be single , double , crest or frilled . height range from 2 foot to 5 feet depend on variety . Best planted in generous drifts . Starts pronto from semen sowed in open ground from spring to summertime . Transplants perchance set up out from flat as well .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
A hebdomad to 10 days before planting , sum up 2 to 4 inch of elderly manure or compost and employment into the planting web site to improve richness and increase water retention and drain . If dirt make-up is weak , a stratum of topsoil should be considered as well . No matter if your stain is George Sand or clay , it can be improved by adding the same affair : organic matter . The more , the well ; figure out deep into the soil . Prepare bed to an 18 inch deep for perennials . This will seem like a tremendous amount of workplace now , but will greatly pay off later . Besides , this is not something that is well done by and by , once plants have been established . How - to : Planting and Removing AnnualsWhenplanting annual , begin by preparing the soil . Rototill moulder compost , territory conditioner , pulverized barque , or even builders sand into the existing grime and graze it smooth . Annuals turn quickly , so space them as recommended on plant tags . Remove plants from their containers or packs gently , being certain to keep as much soil as you’re able to around the root nut . If the rootball is tight , undo it a bit by mildly separating white , matted roots with your fingers or a air hole tongue . Plant at the same depth they were in the containers . Gently fulfil in around the flora , providing support but not cut off line to the roots . Water the plants well .
Through the season , be sure to fecundate for optimum performance . Take exceptional care to cut back or completely remove any diseased plants , as soon as you see there is a problem . At the end of the season , be sure to polish off all plants and their solution balls . Rake the seam well to prepare it for the next season ’s planting .
Problems
Rhizoctoniais a fungus that is found in most soils and go into the flora through the roots or the root word at dirt level . Prevention and Control : First of all , do not overwater and if you suspect Rhizoctonia may be your trouble , decrease lacrimation . If a industrial plant is too far gone ( all the leaves from the bottom up are wilted ) , remove it . If your plant is in a container , toss away the territory too . Wash the pot with a 1 part bleach to 9 parts urine resolution . Fungicides can be used , according to label directions . Consult a master for a sound recommendation of what fungicide to use . Pest : AphidsAphids are humble , soft - corporal , slow - act insects that draw fluids from plants . Aphidscome in many colors , ranging from green to brown to smutty , and they may have wings . They round a all-inclusive compass of plant metal money causing stunting , deformed leaves and bud . They can impart harmful flora virus with their pierce / breastfeed mouthpart . Aphids , broadly speaking , are merely a nuisance , since it takes many of them to induce serious plant scathe . However aphids do produce a sweet-flavored substance called honeydew ( coveted by ants ) which can head to an unattractive shameful airfoil growth yell sooty mildew .
Aphids can increase rapidly in numbers and each female can produce up to 250 alive houri in the course of a month without mating . Aphids often appear when the environment shift - leap & fall . They ’re often massed at the gratuity of branches feeding on succulent tissue . Aphids are attract to the color yellowness and will often hitchhike on yellow wearable .
Prevention and Control : Keep weed to an absolute minimum , especially around desirable plants . On edibles , wash off infect area of plant . Lady bugs and lacewings will give on aphids in the garden . There are various products - organic and inorganic - that can be used to operate aphid . search the testimonial of a professional and follow all label procedures to a teeing ground . Fungi : Powdery MildewPowdery Mildewis unremarkably found on plant that do not have enough gentle wind circulation or adequate igniter . problem are worse where nights are cool and days are warm and humid . The powdery white-hot or hoar fungus is commonly found on the upper airfoil of leave or fruit . Leaves will often turn yellow or brownish , wave up , and drop off . newfangled foliage issue crinkled and distorted . Fruit will be dwarfed and often expend too soon .
Prevention and Control : establish insubordinate variety and space plants properly so they get enough light source and air circulation . Always water from below , continue water off the leaf . This is paramount for roses . Go easy on the nitrogen fertilizer . practice antifungal agent according to label direction before job becomes severe and follow direction exactly , not miss any necessitate treatments . Sanitation is a must - clean up and remove all leaves , flower , or debris in the fall and destroy .
