diff --git a/app/views/seeds/_sow_months_field.html.haml b/app/views/seeds/_sow_months_field.html.haml
index 017f630bf..c15eb6cda 100644
--- a/app/views/seeds/_sow_months_field.html.haml
+++ b/app/views/seeds/_sow_months_field.html.haml
@@ -1,8 +1,10 @@
 -# The months to sow in, as twelve chips to tick, as many as the packet says. Where the
 -# grower's hemisphere is known the seasons are shortcuts that tick a season's
 -# months at once; where it isn't there are none, rather than a guess. The prefix
--# keeps the ids apart where the page has more than one of these.
-- seasons = season_months(model.owner.latitude)
+-# keeps the ids apart where the page has more than one of these. A seed not yet saved has
+-# no owner: it is the member filling in the form who will be.
+- grower = model.owner || current_member
+- seasons = season_months(grower&.latitude)
 .sow-months{ data: { sow_months: '' } }
   = hidden_field_tag 'seed[sow_months][]', '', id: nil
   .sow-months-chips
diff --git a/spec/requests/seeds_sowing_forms_spec.rb b/spec/requests/seeds_sowing_forms_spec.rb
new file mode 100644
index 000000000..77d28c69a
--- /dev/null
+++ b/spec/requests/seeds_sowing_forms_spec.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+# The standalone forms for a seed: the page to add one, and the page to edit one.
+describe SeedsController, 'the standalone forms' do
+  include Devise::Test::IntegrationHelpers
+
+  let(:member) { create_located_member('Sowing forms southern town', -41.3, 174.8) }
+  let(:page) { Capybara.string(response.body) }
+
+  describe '#new' do
+    before do
+      sign_in member
+      get new_seed_path
+    end
+
+    it('renders') { expect(response).to have_http_status(:ok) }
+    it('has the months to sow in, to tick') { expect(page).to have_css('.sow-months-chips input[type=checkbox]', count: 12) }
+    it('asks how to sow') { expect(page).to have_css('textarea[name="seed[how_to_sow]"]') }
+    it('asks for the germination range') { expect(page).to have_css('input[name="seed[germination_days_min]"], input[name="seed[germination_days_max]"]', count: 2) }
+
+    it('offers the seasons for the hemisphere of the member filling it in, there being no owner yet') do
+      expect(page).to have_css('[data-sow-months-season="9,10,11"]', text: 'Spring')
+    end
+  end
+
+  describe '#new for a member we do not know the whereabouts of' do
+    let(:member) { create(:member, location: nil) }
+
+    before do
+      sign_in member
+      get new_seed_path
+    end
+
+    it('renders') { expect(response).to have_http_status(:ok) }
+    it('has no season shortcuts, rather than a guess') { expect(page).to have_no_css('[data-sow-months-season]') }
+  end
+
+  describe '#edit' do
+    let(:seed) { create(:seed, owner: member, sow_months: [10, 11]) }
+
+    before do
+      sign_in member
+      get edit_seed_path(seed)
+    end
+
+    it('renders') { expect(response).to have_http_status(:ok) }
+    it('has the months it says ticked') { expect(page).to have_css('.sow-months-chips input[checked][value="10"]') }
+  end
+
+  describe '#edit by an admin, for someone else\'s seed' do
+    let(:seed) { create(:seed, owner: member) }
+    let(:admin) { create(:admin_member, location: nil) }
+
+    before do
+      sign_in admin
+      get edit_seed_path(seed)
+    end
+
+    it('offers the seasons for the hemisphere of the seed\'s owner') do
+      expect(page).to have_css('[data-sow-months-season="9,10,11"]', text: 'Spring')
+    end
+  end
+end