The temperature in your grow room is very important for the photosynthesis of your marijuana plants. For example, low temperatures reduces evaporation through the leaves. The result is that the suction force, which takes up nutrients via the roots, becomes smaller.
Yes, you can make contributions to your IRA, subject to the IRS annual contribution limits ($5,500 for the 2015 tax year, $6,500 if you're age 50 or older). But you must keep Roth IRA and traditional IRA money separate.
Contributions can be made to your traditional IRA for a year at any time during the year or by the due date for filing your return for that year, not including extensions. Age 70Â½ rule. Contributions cannot be made to your traditional IRA for the year in which you reach age 70Â½ or for any later year.