<tr><td>Drip or capillary</td><td>Harvested rainwater is readily used without further treatment <br>Uses less water</td><td>Planting medium does not 'wick' water sideways readily, so can lead to localized dry areas</td></tr> | <tr><td>Drip or capillary</td><td>Harvested rainwater is readily used without further treatment <br>Uses less water</td><td>Planting medium does not 'wick' water sideways readily, so can lead to localized dry areas</td></tr> |