const int VAL_PROBE = 0; //Analog pin 0
const int MOISTURE_LEVEL = 450; // the value after the LED goes on

void setup()
{
Serial.begin(9600);
pinMode(13, OUTPUT);
pinMode(7, OUTPUT);

}

void loop()
{
digitalWrite(13,HIGH);
delay(2000);
int moisture = analogRead(VAL_PROBE);

Serial.print("Moisture = ");
Serial.println(moisture);

if(moisture < MOISTURE_LEVEL)
{
digitalWrite(7,LOW);
digitalWrite(13,LOW);
delay(10000);
}
else
{
digitalWrite(7,HIGH);
}
}