diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.js b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.js
index 5f6f2b1c..9d442719 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.js
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.js
@@ -69,7 +69,7 @@
     ctrl.cancel = cancel;
     ctrl.save = save;
     ctrl.saving = false;
-    ctrl.weightError = gettext('The weight must be a number between 1 and 256.');
+    ctrl.weightError = gettext('The weight must be a number between 0 and 256.');
     ctrl.monitorAddressError = gettext('The monitor address must be a valid IP address.');
     ctrl.monitorPortError = gettext('The monitor port must be a number between 1 and 65535.');
 
diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.spec.js b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.spec.js
index 9ebeea0e..2d6c3ed7 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.spec.js
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.controller.spec.js
@@ -71,7 +71,7 @@
       expect(ctrl.weight).toBe(1);
       expect(ctrl.ipPattern).toBeDefined();
       expect(ctrl.helpUrl).toBeDefined();
-      expect(ctrl.weightError).toBe('The weight must be a number between 1 and 256.');
+      expect(ctrl.weightError).toBe('The weight must be a number between 0 and 256.');
       expect(ctrl.monitorAddressError).toBe('The monitor address must be a valid IP address.');
       expect(ctrl.monitorPortError).toBe('The monitor port must be a number between 1 and 65535.');
     });
diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.html b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.html
index 76c39254..b622d434 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.html
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/members/actions/edit-member/modal.html
@@ -50,7 +50,7 @@
             <span class="hz-icon-required fa fa-asterisk"></span>
           </label>
           <input name="weight" id="weight" type="number" class="form-control"
-                 ng-model="modal.weight" ng-pattern="/^\d+$/" min="1" max="256"
+                 ng-model="modal.weight" ng-pattern="/^\d+$/" min="0" max="256"
                  ng-required="true">
           <span class="help-block" ng-show="form.weight.$invalid && form.weight.$dirty">
             {$ ::modal.weightError $}
diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.controller.js b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.controller.js
index fc8b0c5b..28a44af9 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.controller.js
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.controller.js
@@ -47,7 +47,7 @@
 
     // Error text for invalid fields
     ctrl.portError = gettext('The port must be a number between 1 and 65535.');
-    ctrl.weightError = gettext('The weight must be a number between 1 and 256.');
+    ctrl.weightError = gettext('The weight must be a number between 0 and 256.');
     ctrl.ipError = gettext('The IP address is not valid.');
 
     // Instances transer table widget properties
diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.help.html b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.help.html
index d5685b67..9a1a20b9 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.help.html
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.help.html
@@ -30,8 +30,9 @@
   <strong translate>Weight:</strong>
   <translate>
   The weight of a member determines the portion of requests or connections it services compared
-  to the other members of the pool. A higher weight means it will receive more traffic. Must be
-  a number from 1 to 256.
+  to the other members of the pool. A value of 0 means the member does not receive new connections
+  but continues to service existing connections. A higher weight means it will receive more
+  traffic. Must be a number from 0 to 256.
   </translate>
 </p>
 <p>
diff --git a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.html b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.html
index cb28a7f3..022d86a0 100644
--- a/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.html
+++ b/octavia_dashboard/static/dashboard/project/lbaasv2/workflow/members/members.html
@@ -90,7 +90,7 @@
               <div class="form-group member-weight"
                    ng-class="{ 'has-error': memberDetailsForm['{$ ::row.id $}-weight'].$invalid && memberDetailsForm['{$ ::row.id $}-weight'].$dirty }">
                 <input name="{$ ::row.id $}-weight" type="number" class="form-control"
-                       ng-model="row.weight" ng-pattern="/^\d+$/" min="1" max="256"
+                       ng-model="row.weight" ng-pattern="/^\d+$/" min="0" max="256"
                        ng-disabled="row.allocatedMember"
                        popover-placement="top" popover-append-to-body="true"
                        popover-trigger="focus"
diff --git a/releasenotes/notes/fix-member-weight-value-range-9310678f967c771a.yaml b/releasenotes/notes/fix-member-weight-value-range-9310678f967c771a.yaml
new file mode 100644
index 00000000..e59ae449
--- /dev/null
+++ b/releasenotes/notes/fix-member-weight-value-range-9310678f967c771a.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Octavia supports setting the weight of members from 0 to 256, but
+    in Horizon the value 0 was not accepted. This fix allows entering
+    the value 0 as well, which is important for putting a member into
+    DRAINING state.