How to grow Saxifraga 'Petra'
Keep in mind when planting that Petra is thought of as half hardy, so it will need cloching or fleece protection when the temperature dips. Ensure your soil has a ph of between 5.6 and 7.5 as Petra is a weakly acidic soil - weakly alkaline soil loving plant.
Growing Petra from seed
Transplanting Petra
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Petra is a half hardy plant.
Harvesting Petra