Hydrangea macrophylla is best grown in rich, medium moisture, well-drained soils in part shade. Tolerates full sun only if grown in consistently moist soils. Soil pH affects the flower color of most cultivars except white (blue in highly acidic soils and lilac to pink in slightly acidic to alkaline soils). Add aluminum sulfate to the soil to make the flowers bluer or add lime to the soil to make the flowers pinker. Begin soil treatments well in advance of flowering, as in late autumn or early spring. Plants generally need little pruning. If needed, prune immediately after flowering by cutting back flowering stems to a pair of healthy buds. Prune out weak or winter-damaged stems in late winter/early spring. Best to mulch plants year-round with 3" of shredded bark, peat or compost.most bigleaf hydrangeas simply will not bloom (or will bloom poorly) in some years because of a variety of winter occurrences beyond the control of the gardener (e.g. low temperatures, sudden wide temperature fluctuations, icy conditions, late frosts).
Houseplant care: Hydrangea macrophylla is the only species grown as indoor plant. Even this one is difficult to carry over from one year to another indoors because it require constantly cool conditions in order to bloom. Thus, potted Hydrangea macrophylla are usually bought when budding in early spring and may be kept for a few weeks indoors while flowering and then planted outdoors.
Light: Grow Hydrangea macrophylla plants in bright light but not too much direct sunlight.
Temperature: Flowers of potted Hydrangea macrophylla will last for up to eight weeks if kept in a cool position (below 16°C). In normal room temperatures the blooms are likely to fade within three to four weeks,Hardiness -20°F
Watering: Water plentifully as often as necessary to keep the potting mixture thoroughly moist. Never allow the potting mixture to dry out or the plant will collapse. If this happens, immerse the pot in a bucket of water until the root ball is thoroughly soaked. Even if this treatment succeeds, however, the current flowering period of the plant will have been shortened.
Feeding: Apply standard liquid fertiliser every two weeks as long as the plant remains indoors.
Potting and repotting: Repotting is not necessary for these temporary indoor plants. Most specimens will recover and thrive is planted in a sheltered position outdoors.
Gardening: Hydrangea macrophylla do not have to be pruned back – ever – unless they are very old. Removing dead stems is the only pruning that must be done for the health of the plant and these can be removed at any time. Hydrangea macrophylla blooms on large buds formed on previous season’s growth. Therefore is recommended do not cut the stems that are yet to flower as they will produce the first flowers of next year.
Plants Around 10~15 inch height in 1 gallon pot. similar to pictures above
Plants shipping without container. will be wrapped and fastened safely in our packaging Thank you!