The common helianthus is easy grown from seed and is available in a variety of colors and heights up to 10 groundwork tall . A true sunlight worshipper , its capitulum stick with the sunshine as it crosses the sky . helianthus require plenty of water and are get laid for literally sucking grunge juiceless , which can be a problem for neighboring plants . A must for the small fry ’s garden , the shear size of the plants is indisputable to build confidence in even the most beginner nurseryman . straight sow germ in fecund , copious soil where they are to spring up . Dried come heads are relished by birds . Rays ( flower flower petal ) and seed are edible for humans too !
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
Through the season , be certain to fecundate for optimal performance . Take special care to cut back or altogether hit any pathological plants , as soon as you see there is a problem . At the end of the season , be indisputable to remove all plants and their root balls . Rake the bed well to fix it for the next time of year ’s planting .
Problems
Prevention and Control : Plant resistant varieties and provide maximal air travel circulation . Clean up all debris , specially around plants that have had a problem . Do not water from overhead and water only during the mean solar day so that plant will have enough time to dry out before night . enforce a antifungal tag for rust on your plant . Fungi : Powdery MildewPowdery Mildewis usually found on plants that do not have enough air circulation or decent lightness . Problems are worse where night are cool and days are warm and humid . The powdery white or grey fungus is usually find on the upper surface of leaves or yield . Leaves will often turn yellow or brown , coil up , and drop off . New foliage emerges wrinkle and distorted . Fruit will be dwarfed and often drop early .
Prevention and Control : Plant resistant varieties and space plant properly so they receive passable light and air circulation . Always water from below , keeping water off the foliage . This is overriding for rosebush . Go tardily on the nitrogen fertilizer . employ antifungal harmonise to recording label directions before problem becomes severe and follow directions exactly , not missing any required treatment . Sanitation is a must - clean up and remove all parting , heyday , or debris in the fall and destroy . cuss : CaterpillarsCaterpillars are the immature form of moth and butterflies . They are voracious feeders attack a wide variety of plants . They can be extremely destructive and are characterized as leafage tributary , stem bore bit , leaf rollers , cutworm and tent - former .
Prevention and Control : keep weeds down , scout private plants and remove caterpillars , apply labeled insecticides such as soaps and oils , take advantage of natural enemies such as parasitic wasps in the garden and practice Bacillus thuringiensis ( biological warfare ) for some caterpillar species . Fungi : Leaf SpotsLeaf stain are do by fungus or bacterium . chocolate-brown or black blot and patch may be either ragged or circular , with a water soak or yellow - edged appearance . worm , rainwater , dirty garden tools , or even hoi polloi can aid its spreadhead .
Prevention and Control : absent infected leaves when the plant is dry . Leaves that collect around the bag of the plant should be raked up and throw away of . Avoid overhead irrigation if potential ; water should be take aim at soil spirit level . For fungous leaf spots , employ a recommended fungicide according to label directions .
Miscellaneous
You will often hear loam referred to as a sandy loam ( having more sand , yet still plenty of constitutional matter ) or a clay loam ( heavier on the remains , yet workable with good drain . ) The addition of organic matter to either sand or clay will result in a loamy territory . Still not sure if your soil is a sand , remains , or loam ? judge this simple mental testing . Squeeze a handfull of slightly moist , not wet , soil in your hand . If it forge a tight globe and does not fall aside when lightly tap with a finger , your soil is more than potential clay . If stain does not mold a ball or crumbles before it is tapped , it is gumption to very sandy loam . If soil forms a clod , then crumbles pronto when lightly intercept , it ’s a loam . Several straightaway , light taps could mean a clay loam .
