diff --git a/plants/models.py b/plants/models.py
index 9afa808..0e1bfb0 100644
--- a/plants/models.py
+++ b/plants/models.py
@@ -24,6 +24,8 @@ class Species(models.Model):
     pruning_months = models.JSONField(default=list)
     bloom_months = models.JSONField(default=list)
     api_image_url = models.URLField(blank=True)
+    frost_hardiness_c = models.SmallIntegerField(null=True, blank=True)
+    planting_density_m2 = models.PositiveSmallIntegerField(null=True, blank=True)
     perenual_id = models.IntegerField(unique=True, null=True, blank=True)
     vpc_slug = models.CharField(max_length=200, blank=True, db_index=True)
     vpc_raw = models.JSONField(null=True, blank=True)