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Biennials live for 2 years, whereas perennials live for longer. As a general rule, biennial and perennial seeds should be sown in spring, but some can be sown in autumn as well. Many varieties will self-seed after flowering, giving you even more plants!
Erigeron karvinskianus 'Profusion'
Erigeron karvinskianus, Fleabane, Mexican FleabaneMore info
Helianthus maximiliani, Maximilian Sunflower
Often known as the Maximilian Sunflower, this attractive species produces masses of golden yellow, 7cm (3") wide blooms all the way up the tall stems, which have a sweet chocolate fragrance. Perennial sunflower Helianthus maximiliani makes a stunning addition to the back of borders and a good late summer food source for both birds and butterflies. Height: 250cm (98"). Spread: 100cm (39").
Companion planting: Try growing sunflowers with chives to deter aphids.
Useful links:More info
Tower of Jewels, Giant Viper's Bugloss, Tree Echium, Echium pinnifolium
No wonder this is also called Tower of Jewels or 'Pride of Tenerife! Exceptionally tall flower spikes packed with either rose or purple-blue flowers, interspersed with silver-green lanceolate leaves.More info
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