The Streams are bright with Marsh Marigolds, (Caltha palustris). The yellow hooded spathes of the American Skunk Cabbage, (Lysichiton americanus), which precede large rank leathery leaves, are conspicuous along the stream from the Still Pond.
Camellias are still flowering throughout the Garden. They are mainly older Camellia japonica cultivars and a number of Williamsii hybrids.
Along the Bluebell Walk, opposite the Acer Glade, look out for the bright purple flowers of the deciduous R. reticulatum. This month the Japanese azaleas start into flower. They are usually at their best during the last week of April and the first week of May.
R.racemosum grows down the path from the Still Pond, it is a medium sized shrub that bears pale to bright pink flowers.
Rhododendron 'Quaker Girl' grows in the glade set back from the path at the top of Thomson's Stream and bears trusses of stunning white flowers with a deep crimson throat.
Look out for Rhododendron 'Bibiani' growing in a number of areas in the garden, this shrub produces compact trusses of rich crimson funnel shaped flowers with maroon spots.
Early evergreen azaleas are beginning to flower throughout the garden look out for 'Kirin' a pale pink "hose in hose" (flower within an flower) and 'Sylvester' which has small deep pink flowers.
In a glade set back from the Main Stream and other locations around the Garden are the blue flowering Rhododendrons from the Triflorum series these are Rhododendron augustinii and the R,chasmanthum hybrid Rhododendron 'Electra'.
Throughout the gardens pink and white forms of Magnolia soulangiana come into flower.
Along the Bluebell Walk are two small pink hybrids of M. stellata, called M. X loebneri 'Leonard Messel'. A larger one is set back by the Scots Pine to the far side of the Acer Glade.
Magnolia 'Heaven Scent' one of the Gresham Hybrids grows in a ride off the Main Stream and has goblet shaped flowers, pink on the outside and white inside. Its flowers have a strong lavender scent.
In the Wet Lawn area near the top gate, the golden yellow flowers of Narcissus bulbocodium subsp. bulbocodium with conical cups and pointed petals have now appeared and succeed the delicate flowers of Narcissus cyclamineus, which are also naturalised in this area.
The Bog Garden
Look out for the clusters of white or pale pink flowers borne on white-haired stems which are those of the "Umbrella Plant", Darmera peltata which flowers before it produces foliage.