Nutrient Deficiency in Canna

15 Essential Nutrients That Plants Need

Plants require at least 15 essential nutrients to grow normally. These 15 nutrients can be classified into three categories: essential nutrients, macronutrients, and micronutrients (also known as trace or minor elements):

Essential Nutrients	Macronutrients	Micronutrients
Carbon (C)  Hydrogen (H)  Oxygen (O)	Nitrogen (N)  Phosphorus (P)  Potassium (K)  Sulphur (S)  Calcium (Ca)  Magnesium (Mg)	Copper (Cu)  Manganese (Mn)  Zinc (Zn)  Iron (Fe)  Boron (B)  Molybdenum (Mo)
Plants obtain these essential nutrients from water, air and sunlight, to make food for growth.	These nutrients are required by plants in relatively large amounts.	These nutrients are required by plants in smaller quantities.

What Is Nutrient Deficiency? 

Plants can suffer from malnutrition if they are not getting what they need. Nutrient deficiency occurs when a plant lacks an essential nutrient required for growth. Without sufficient essential nutrients, plants will not thrive and present various symptoms to express the deficiency. 

Essential Plant Nutrients And Their Deficiency Symptoms 

Regrettably, as little research has been done into Canna mineral deficiency, we do not have any images available showing canna specifically, and so we have to make use of images of other plant types to illustrate the effect of the various mineral deficiencies.

Boron Deficiency	Sulphur Deficiency	Manganese Deficiency
Result: Discolouration of leaf buds Breaking and dropping of buds	Result: New growth starts to yellow New growth is stunted and small	Result: Leaves are a pale colour Veins and venules dark green and reticulated

Zinc Deficiency	Iron Deficiency	Copper Deficiency
Result: Leave are pale and narrow Short veins are dark green Dark spots on leaves and edges	Result: Leaves are pale No spots Major veins are green	Result: Pale pink between the veins Wilt and drop

Molybdenum Deficiency	Magnesium Deficiency	Phosphorus Deficiency
Result: Leaves go light green/lemon/yellow/orange Spots on whole leaf except veins Sticky secretions from under the leaf	Result: Paleness from leaf edges No spots Edges have cup shaped folds Leaves die and drop in extreme deficiency	Result: Plant short and dark green Extreme deficiencies turn brown or black Bronze colour under the leaf

Nitrogen Deficiency	Potassium Deficiency
Result: Stunted growth Extremely pale colour Upright leaves with light green/yellowish colour Appear burnt in extreme deficiency	Result: Small spots on the tips Pale edges Spots turn rusty Tips start to fold