```json
{
  "sym_variables": [
    ("x0", "aloe vera"),
    ("x1", "begonias")
  ],
  "objective_function": "7.44 * x0 + 7.67 * x1",
  "constraints": [
    "22 * x0 + 5 * x1 >= 14",
    "18 * x0 + 13 * x1 >= 59",
    "6 * x0 + 8 * x1 >= 59",
    "3 * x0 + 17 * x1 >= 42",
    "22 * x0 + 14 * x1 >= 31",
    "8 * x0 + -5 * x1 >= 0",
    "22 * x0 + 5 * x1 <= 40",
    "18 * x0 + 13 * x1 <= 108",
    "6 * x0 + 8 * x1 <= 83",
    "3 * x0 + 17 * x1 <= 72",
    "22 * x0 + 14 * x1 <= 76",
    "x0, x1 are integers"
  ]
}
```

```python
import gurobipy as gp

try:
    # Create a new model
    m = gp.Model("plant_optimization")

    # Create variables
    aloe_vera = m.addVar(vtype=gp.GRB.INTEGER, name="aloe_vera")
    begonias = m.addVar(vtype=gp.GRB.INTEGER, name="begonias")

    # Set objective function
    m.setObjective(7.44 * aloe_vera + 7.67 * begonias, gp.GRB.MAXIMIZE)

    # Add constraints
    m.addConstr(22 * aloe_vera + 5 * begonias >= 14, "cost_min")
    m.addConstr(18 * aloe_vera + 13 * begonias >= 59, "water_min")
    m.addConstr(6 * aloe_vera + 8 * begonias >= 59, "growth_min")
    m.addConstr(3 * aloe_vera + 17 * begonias >= 42, "space_min")
    m.addConstr(22 * aloe_vera + 14 * begonias >= 31, "yield_min")
    m.addConstr(8 * aloe_vera - 5 * begonias >= 0, "custom_min")

    m.addConstr(22 * aloe_vera + 5 * begonias <= 40, "cost_max")
    m.addConstr(18 * aloe_vera + 13 * begonias <= 108, "water_max")
    m.addConstr(6 * aloe_vera + 8 * begonias <= 83, "growth_max")
    m.addConstr(3 * aloe_vera + 17 * begonias <= 72, "space_max")
    m.addConstr(22 * aloe_vera + 14 * begonias <= 76, "yield_max")


    # Optimize model
    m.optimize()

    if m.status == gp.GRB.OPTIMAL:
        print('Obj: %g' % m.objVal)
        print('aloe_vera:', aloe_vera.x)
        print('begonias:', begonias.x)
    elif m.status == gp.GRB.INFEASIBLE:
        print('The model is infeasible.')
    else:
        print('Optimization ended with status %d' % m.status)


except gp.GurobiError as e:
    print('Error code ' + str(e.errno) + ': ' + str(e))

except AttributeError:
    print('Encountered an attribute error')
```