diff --git a/doc/ClassDiagramDraft.uxf b/doc/ClassDiagramDraft.uxf
index 914684a..5ddaf9a 100644
--- a/doc/ClassDiagramDraft.uxf
+++ b/doc/ClassDiagramDraft.uxf
@@ -1,19 +1,62 @@
-<diagram program="umletino" version="15.0.0"><zoom_level>10</zoom_level><element><id>UMLClass</id><coordinates><x>630</x><y>120</y><w>100</w><h>30</h></coordinates><panel_attributes>Main</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>980</x><y>310</y><w>240</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
+<diagram program="umletino" version="15.0.0"><zoom_level>10</zoom_level><element><id>UMLClass</id><coordinates><x>570</x><y>175</y><w>100</w><h>30</h></coordinates><panel_attributes>Main</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>920</x><y>365</y><w>300</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
 PlantDatabase
 --
-+ getPlantList: List&lt;Plant&gt;</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>820</x><y>590</y><w>220</w><h>50</h></coordinates><panel_attributes>TaskListController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1020</x><y>100</y><w>210</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Record&gt;&gt;
++ getPlantList(zone: HardinessZone): List&lt;Plant&gt;</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>760</x><y>645</y><w>220</w><h>50</h></coordinates><panel_attributes>TaskListController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>970</x><y>85</y><w>210</w><h>130</h></coordinates><panel_attributes>&lt;&lt;Record&gt;&gt;
 Plant
 --
-+ name (readonly)
-+ description (readonly)
-+ spacing (readonly)</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1060</x><y>590</y><w>160</w><h>50</h></coordinates><panel_attributes>TaskListModel</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>510</x><y>570</y><w>180</w><h>70</h></coordinates><panel_attributes>PlantListModel</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>290</x><y>570</y><w>180</w><h>80</h></coordinates><panel_attributes>PlantListController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>300</x><y>170</y><w>100</w><h>30</h></coordinates><panel_attributes>Task</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>300</x><y>360</y><w>240</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
++ id: long
++ name: String
++ description: String
++ spacing: ?
++ lifecycle: Lifecycle
+</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1020</x><y>645</y><w>160</w><h>50</h></coordinates><panel_attributes>TaskListModel</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>450</x><y>625</y><w>180</w><h>70</h></coordinates><panel_attributes>PlantListModel</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>230</x><y>625</y><w>180</w><h>80</h></coordinates><panel_attributes>PlantListController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1300</x><y>825</y><w>380</w><h>230</h></coordinates><panel_attributes>Task
+--
++ id: long
++ name: String {readOnly}
++ description: String {readOnly}
++ startDate: Date {readOnly}
+- interval: int
+- endDate: Date
+--
++ Task(name: String, description: String, startDate: String): Task
++ withInterval(interval: int): Task
++ withEndDate(endDate: Date): Task
++ withId(id: long): Task
+--
++ getInterval(): Optional&lt;int&gt;
++ getEndDate(): Optional&lt;Date&gt;</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>960</x><y>825</y><w>280</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
 TaskDatabase
 --
-+ getTaskList: List&lt;Task&gt;
++ getTaskList(start: Date, end: Date): List&lt;Task&gt;
 + saveTask(Task task): void
-+ removeTask(Task task): boolean</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>560</x><y>210</y><w>100</w><h>100</h></coordinates><panel_attributes>MainWindow</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>690</x><y>230</y><w>180</w><h>130</h></coordinates><panel_attributes>MainWindowController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>600</x><y>420</y><w>210</w><h>70</h></coordinates><panel_attributes>NotificationService</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>990</x><y>680</y><w>240</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
++ removeTask(Task task): boolean</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>500</x><y>265</y><w>100</w><h>100</h></coordinates><panel_attributes>MainWindow</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>630</x><y>285</y><w>180</w><h>130</h></coordinates><panel_attributes>MainWindowController</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>540</x><y>475</y><w>210</w><h>70</h></coordinates><panel_attributes>NotificationService</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1690</x><y>565</y><w>240</w><h>140</h></coordinates><panel_attributes>&lt;&lt;Interface&gt;&gt;
 WeatherService
 --
-+ getWeatherForecast: WeatherForecast</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>700</x><y>680</y><w>230</w><h>100</h></coordinates><panel_attributes>WeatherForecast
++ getWeatherForecast: WeatherForecast</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1410</x><y>445</y><w>230</w><h>100</h></coordinates><panel_attributes>WeatherForecast
 --
-- updateTasks</panel_attributes><additional_attributes></additional_attributes></element></diagram>
\ No newline at end of file
+- updateTasks</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>1380</x><y>45</y><w>260</w><h>240</h></coordinates><panel_attributes>Lifecycle
+--
+- sowStart: Date {final}
+- sowEnd: Date {final}
+- plantStart: Date {final}
+- plantEnd: Date {final}
+- harvestStart: Date {final}
+- harvestEnd: Date {final}
+--
++ Lifecylcle(sowStart: Date, sowEnd: Date, plantStart: Date, plantEnd: Date, harvestStart: )
++ getSowStart(): Optional&lt;Date&gt;
++ getSowEnd(): Optional&lt;Date&gt;
++ getPlantStart(): Optional&lt;Date&gt;
++ getPlantEnd(): Optional&lt;Date&gt;
++ getHarvestStart(): Optional&lt;Date&gt;
++ getHarvestEnd(): Optional&lt;Date&gt;
+</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>1170</x><y>115</y><w>230</w><h>60</h></coordinates><panel_attributes>lt=&lt;-&gt;&gt;&gt;&gt;&gt;</panel_attributes><additional_attributes>210;10;10;40</additional_attributes></element><element><id>Text</id><coordinates><x>230</x><y>65</y><w>190</w><h>70</h></coordinates><panel_attributes>Note:
+--
+{final, readOnly} omitted on public  data fields in &lt;&lt;Record&gt;&gt; Entities for clarity
+style=wordwrap</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>1230</x><y>885</y><w>90</w><h>30</h></coordinates><panel_attributes>lt=&lt;.</panel_attributes><additional_attributes>70;10;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>1090</x><y>685</y><w>30</w><h>160</h></coordinates><panel_attributes>lt=&lt;.</panel_attributes><additional_attributes>10;140;10;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>410</x><y>785</y><w>210</w><h>120</h></coordinates><panel_attributes>&lt;&lt;Record&gt;&gt;
+UserPlanting
+--
++ plantId: long
++ isSown: boolean
++ startDate: Date
++ area: int</panel_attributes><additional_attributes></additional_attributes></element></diagram>
\ No newline at end of file
diff --git a/doc/plant_db-erm.uxf b/doc/plant_db-erm.uxf
new file mode 100644
index 0000000..9983ebf
--- /dev/null
+++ b/doc/plant_db-erm.uxf
@@ -0,0 +1,11 @@
+<diagram program="umletino" version="15.0.0"><zoom_level>10</zoom_level><element><id>UMLClass</id><coordinates><x>450</x><y>180</y><w>160</w><h>60</h></coordinates><panel_attributes>Plant
+valign=center</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>900</x><y>140</y><w>160</w><h>60</h></coordinates><panel_attributes>HardinessZone
+valign=center</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>290</x><y>450</y><w>160</w><h>60</h></coordinates><panel_attributes>Lifecycle
+valign=center</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>320</x><y>120</y><w>90</w><h>40</h></coordinates><panel_attributes>_plant_id_</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>140</x><y>410</y><w>90</w><h>40</h></coordinates><panel_attributes>_lc_id_</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1090</x><y>70</y><w>90</w><h>40</h></coordinates><panel_attributes>_zone_id_</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>430</x><y>80</y><w>70</w><h>40</h></coordinates><panel_attributes>name</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>520</x><y>60</y><w>100</w><h>40</h></coordinates><panel_attributes>description</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>280</x><y>190</y><w>100</w><h>40</h></coordinates><panel_attributes>spacing</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1110</x><y>150</y><w>100</w><h>40</h></coordinates><panel_attributes>name</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>240</x><y>360</y><w>100</w><h>40</h></coordinates><panel_attributes>sow_start</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>360</x><y>360</y><w>100</w><h>40</h></coordinates><panel_attributes>sow_end</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>490</x><y>470</y><w>100</w><h>40</h></coordinates><panel_attributes>plant_start</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>460</x><y>540</y><w>100</w><h>40</h></coordinates><panel_attributes>plant_end</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>360</x><y>580</y><w>100</w><h>40</h></coordinates><panel_attributes>harvest_start</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>220</x><y>570</y><w>100</w><h>40</h></coordinates><panel_attributes>harvest_end</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>370</x><y>200</y><w>100</w><h>30</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>10;10;80;10</additional_attributes></element><element><id>Relation</id><coordinates><x>390</x><y>130</y><w>80</w><h>70</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;60;50</additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>310</x><y>110</y><w>110</w><h>60</h></coordinates><panel_attributes>layer=0</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1080</x><y>60</y><w>110</w><h>60</h></coordinates><panel_attributes>layer=0</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>130</x><y>400</y><w>110</w><h>60</h></coordinates><panel_attributes>layer=0</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>460</x><y>100</y><w>60</w><h>100</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;40;80</additional_attributes></element><element><id>Relation</id><coordinates><x>560</x><y>80</y><w>40</w><h>120</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;10;100</additional_attributes></element><element><id>Relation</id><coordinates><x>1050</x><y>90</y><w>100</w><h>70</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>73;18;10;50</additional_attributes></element><element><id>Relation</id><coordinates><x>1050</x><y>150</y><w>90</w><h>40</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>63;18;10;20</additional_attributes></element><element><id>Relation</id><coordinates><x>210</x><y>430</y><w>110</w><h>60</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>83;38;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>300</x><y>390</y><w>70</w><h>80</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>43;58;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>390</y><w>40</w><h>80</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;58;20;10</additional_attributes></element><element><id>Relation</id><coordinates><x>440</x><y>460</y><w>70</w><h>50</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;50;30</additional_attributes></element><element><id>Relation</id><coordinates><x>440</x><y>480</y><w>60</w><h>80</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;40;60</additional_attributes></element><element><id>Relation</id><coordinates><x>380</x><y>490</y><w>40</w><h>110</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>13;18;20;90</additional_attributes></element><element><id>Relation</id><coordinates><x>270</x><y>490</y><w>90</w><h>100</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>63;18;10;80</additional_attributes></element><element><id>UMLSpecialState</id><coordinates><x>720</x><y>340</y><w>220</w><h>90</h></coordinates><panel_attributes>PlantLifecycle
+type=decision</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>880</x><y>290</y><w>180</w><h>90</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>160;10;10;70</additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1040</x><y>280</y><w>90</w><h>40</h></coordinates><panel_attributes>zone_id</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1040</x><y>330</y><w>90</w><h>40</h></coordinates><panel_attributes>plant_id</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1040</x><y>400</y><w>90</w><h>40</h></coordinates><panel_attributes>lc_id</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLUseCase</id><coordinates><x>1020</x><y>270</y><w>130</w><h>110</h></coordinates><panel_attributes>layer=0</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>920</x><y>340</y><w>140</w><h>60</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>120;10;10;40</additional_attributes></element><element><id>Relation</id><coordinates><x>900</x><y>390</y><w>160</w><h>50</h></coordinates><panel_attributes>lt=-</panel_attributes><additional_attributes>140;30;10;10</additional_attributes></element><element><id>Relation</id><coordinates><x>440</x><y>390</y><w>340</w><h>90</h></coordinates><panel_attributes>lt=-
+m1=m
+m2=m</panel_attributes><additional_attributes>10;60;320;10</additional_attributes></element><element><id>Relation</id><coordinates><x>590</x><y>230</y><w>220</w><h>140</h></coordinates><panel_attributes>lt=-
+m1=         1
+m2=m</panel_attributes><additional_attributes>10;10;200;120</additional_attributes></element><element><id>Relation</id><coordinates><x>850</x><y>190</y><w>140</w><h>180</h></coordinates><panel_attributes>lt=-
+m1=1
+m2=m</panel_attributes><additional_attributes>120;10;10;160</additional_attributes></element></diagram>
\ No newline at end of file