Unlike its name , Russian salvia ( Perovskia ) is not technically a salvia ; it is a member of the mint family . Botanically , it is a suffrutex , because it carry both woody and flabby tissue paper . Foliage is gray - green , with humble leaves and silvery stems . Lavender - blue spike heel bloom mid- to late summertime . The touchy elegance of Russian salvia lends a come to aura to the garden .

Growth Requirements

Russian sage grows best where there is full sun and good drain . Better suited to drouth , this plant does not do well with excess water supply . Fertilizing is not generally necessary since it promotes leggy ontogeny that will postulate stake for support . Russian sage grows best when pH is between 5.1 and 6.5 .

Chlorosis

greensickness in Russian sage is due to a lack of chlorophyl . Leaf tissue turn yellow , mostly between the vein . Veins appear darker green . symptom are leaf that are pale green to yellow . The more yellow in color , the more severe the problem . Chlorosis may appear in only a portion of the plant . As the disease progresses , leaf vein twist yellow and the leaf decease . Affected branches will often perish . Death of the integral flora is not uncommon if the problem is not addressed .

Causes of Chlorosis

greensickness is often triggered by pitiable drain , damaged or press roots , high dirt alkalinity and nutrient deficiencies . Nutrient deficiencies can be because of a lack of nutrients or in high spirits soil pH. An excess of one food can create an unbalance in another , making it inaccessible to the plant . nutritious insufficiency such as atomic number 26 , manganese and zinc are vulgar among chlorotic plant . Calcium , zinc , Mn , Lucifer or copper in mellow quantity can tie up iron so that it is unusable to the industrial plant . A deficiency of potassium will hinder the availability of atomic number 26 .

Determining the Cause

A pH examination will determine that alkalinity of territory . Because a lack of iron is the most common causal agency , it is important to know that most plants can absorb iron when the pH is between 5.0 and 6.5 . If soil alkalinity does not seem to be the cause , plant leave might offer a clue . Check what leaf turned chlorotic first . Chlorosis related to iron deficiency start on the fresh increase first . Chlorosis link with zinc or manganese deficiency shows on older and inner leaves first . moderate the soil around the plant life . Poor drain and compression will advance greensickness in the Russian sage plant . offend or weak root systems , often get by hard dirt , have difficultness extract food .

Solution

After influence the cause of greensickness in your works , it is possible to treat the trouble . Soil pH can be adjusted . High pH can be lowered with the addition of sulfur , while low pH can be rear with the addition of quicklime . Aerating the dirt to palliate concretion promotes proper drainage . Foliar applications of nutrients can address nutrient deficiencies temporarily . Amending the soil with compost allow for needed nutrient to the ground .

References

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