You can have the plants which give the high yields and income and after it use this money for the progress of your family.
like cotton, mango trees etc
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We can grow such plants that are profitable . we can grow eucalyptus plants that is of medicinal use . we can also grow flowering plants like hibiscus , etc which can has a great demand now . we can grow fruits and vegetable plants like lemon,mango,banana,tomato,ginger,potato,etc
                         hope it help u . 

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eucalyptus plant also transpirate fastly the surplus of waste water