The Fortnight lily grows well in sunny locations on many types of soils and with regular summer water. The chart shown below provides a recommended baseline guide to the monthly irrigation schedule and volume of supplemental water needed to maintain healthy growth throughout the average year. It should be noted there are several months indicated by an asterisk (*) when winter rains can provide sufficient moisture and irrigation is not needed. The high and low range of moisture indicates it can grow with varying amounts of water; summer water helps sustain its recurring flowering performance.
|
Jan* |
Feb* |
Mar* |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov* |
Dec* |
Runs per Month |
0x to 3x |
0x to 3x |
0x to 3x |
2x to 3x |
2x to 3x |
3x to 4x |
3x to 4x |
3x to 4x |
2x to 3x |
2x to 3x |
0x to 3x |
0x to 3x |
Inches per Run |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
1″ |
|
Inches per Month |
0″ to 3″ |
0″ to 3″ |
0″ to 3″ |
2″ to 3″ |
2″ to 3″ |
3″ to 4″ |
3″ to 4″ |
3″ to 4″ |
2″ to 3″ |
2″ to 3″ |
0″ to 3″ |
0″ to 3″ |
Range of supplemental summer water: 17"-24"
Range of supplemental winter water: 0"-15"
|
0″-3″ |
0″-3″ |
0″-3″ |
2″-3″ |
2″-3″ |
3″-4″ |
3″-4″ |
3″-4″ |
2″-3″ |
2″-3″ |
0″-3″ |
0″-3″ |
|
Jan* |
Feb* |
Mar* |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov* |
Dec* |
For more information on how to use this Irrigation Schedule and Graph, follow this link.
For information how to calculate your irrigation system’s schedule and precipitation rate, please follow this link.
Divide in fall every 3-4 years to control size and keep looking good (4). Flowers stems continue to produce flowers for multiple years, so do not remove as quickly as you would with other plants (17). Dead head (remove) individual spent flowers as desired (S).
References